Sister, Sister

At a Detroit shopping mall, twins Tia Landry and Tamera Campbell meet for the first time, but when Lisa gets a job in St. Louis, and Tia is worried that she will not see Tamera. Tia and Tamera get lost at a local train suburb, where they meet with Lisa and Ray and they discuss whether or not Tia and Lisa should move into Tamera's house.

Tamera decides to go with a date to the school dance, breaking a promise to Tia as they had both agreed to stay home unless they both had dates.

Tia and Tamera host a slumber party, and Lisa's romance comes to an end when she catches her boyfriend with another woman.

Tia makes the honor roll at school, Tamera overhears Ray and Lisa discussing their kids and school and decides to make Ray proud of her by getting an A on her history test. On the day of the test, she blanks out and begs Tia to take the test as her to make the grade.

Tia and Tamera take a city bus to see a movie but get lost on the way home.

Tia is anxious over a pimple and asks Tamera to go on a date in her place.

Lisa buys a new car which is a major fixer upper.  Tamera causes damage to Ray's car.

Lisa is upset when Ray treats the girls to a Chicago trip for their birthdays; Tamera's friend Sarah feels left out.

Tia and Tamera try to break up Ray and his new girlfriend.

Lisa is reluctant to let Tia go on a date with an older boy but agrees as long as Tamera also goes.  Ray is caught kissing the bride of the wedding Lisa is designing gowns for.

When Lisa's mom comes for a visit, Lisa convinces Ray to pretend they are married.  Tia and Tamera search for a talent for the school talent show.

The girls win tickets to a concert that Lisa and Ray don't approve of.

After receiving a make-over, Tamera becomes obsessed with the in crowd.

Tia and Tamera juggle jobs at Ray's Limo Service and Rocket Burger.  Lisa tries to help Roger get his mother's earrings back from a girl.

Tia and Tamera both end up with dates with the same guy.

Lisa looks forward to a date with Terrence.  Tia and Tamera land dates to the dance.  Roger dates a taller girl.

Tamera seeks Tia's help when she meets a stranger on the bus.

Ray shoots a commercial for his limo service.  Tia and Tamera become attached to a pig at the commercial shoot.

While being treated in the hospital where they were born, Tia and Tamera search for their birth records.

Tia gets a tattoo with her boyfriend's name upsetting Lisa.

Tia and Tamera get their learner's permits.

Tia and Tamera try and throw a party to establish their social standing.

The girls end up with detention.  Roger accidentally takes a statue from the art gallery.

Tia and Tamera take the SAT with surprising results.

Tia and Tamera audition for parts in the school play.

Tamera spills the beans about Tia having a dream about her boss at work.

Tia and Tamera take a parenting class at school; Lisa meets Terrence's parents.

Lisa uses the girls answer machine to snoop on them and discovers they have taking up smoking.

Lisa allows the girls to skip school resulting in a fight with Ray.

When Tia is out sick from school, Tamera buddies up with Denise who begins acting and dressing like Tamera.

Terrence and Lisa get engaged but a dream leads Lisa to have second thoughts.

Tia arranges her school schedule to have classes with a cute boy.  Tamera joins the softball team.

Lisa breaks up with Terrence but Ray continues to see him behind her back.

Tamera pretends to be Tia so she can tutor her cute football player.

A dark secret from Ray's past is revealed after he lectures Tamera on skipping class.  Lisa's aunt dies and leaves her an inheritance.

Ray's estranged father comes to town.

Tamera takes advantage when Tia is promoted to assistant manager.

Tamera convinces Tia to drive her and their friends to a rave even after Ray and Lisa forbid them from going.

Tamara believes she can get special treatment after Ray starts dating her science teacher.

Lisa, Ray, Tamera and Tia head to Hawaii where they run into Lisa's ex, Terrence and his new girlfriend who just happens to be Ray's ex, Tonya.

Tia and Tamera end up stuck on boat in the middle of the sea.

Tia visits an elite private school in Chicago but has second thoughts about attending.

Ray's father returns and is being hounded by a loan shark.

When Tia ends up with two dates to the school dance she gets Tamera to impersonate her for one of the dates.

When Tia decides to document her family life for a school project, she decides they are too bring and begins manipulating situations.

The girls are assigned to volunteer at a retirement home where Tamara is partnered with a bitter old man.

Tia uses her knowledge from her psychology class to "help" Ray, Lisa and Tamera.

Tia and Tamera cross the picket line at Terrence's store.

Ray gives Tamera a false sense of confidence about her piano playing.

The girls trade places with Tia taking Tamera's place in summer school to be near a boy and Tamera working at a summer camp.

Tamera runs for junior class president against Rhonda.

The girls pretend to be older to make friends with some college kids.

Tia wants Tamera to sing at a competition to beat Marva.

After Roger experiences a summer transformation, both Tia and Tamera find themselves crushing on him.

The girls are curious to learn more about their birth parents.

Ray and Lisa agree to help Tia and Tamera buy a car.

Tia's close relationship with Ray is a source of jealousy for Tamera.

Tia and Tamera try out for the cheerleading squad.

Tia and Tamera slip in popularity; Lisa's date with a doctor makes Ray jealous.

Tamera develops a crush on a childhood friend of Tia's.

Tia gets a job in a diner to escape her twin sister, only to find Tamera working there too.

Tia and Tamera finally witness a romantic moment between Ray and Lisa.

Lisa comes between Ray and his prospective business partner; Tia takes Tamera' place on yearbook picture day.

Tia and Tamera dress up as boys to try out for the school hockey team.

Ray becomes jealous when Tamera begins paying attention to a substitute teacher at school.

Tia sets Tamera up with new boyfriend's younger brother, unaware that he is 9.

The girls go on a ski trip without their parents.

Lisa gets a second job working in the school cafeteria.

Tia crushes on Roger for Valentine's Day.  Ray gives Lisa money to bid on him and the bachelor auction.

Tia and Tamera believe they are corresponding with a famous photographer in the internet.

Tamera tries to get Tia to go out with Elliot so she can get Boys II Men tickets.

Tamera convinces Tia to participate in a double dutch tournament but Tia overworks Tamera practicing.

Tia begins hanging out with new smarter friends at school leaving Tamera jealous.

Tia and Tamera wind up on a game show against Mary-Kate and Ashley.

Lisa fears Ray is cheating on her; Tamera becomes friends with a girl who shoplifts.

Lisa hopes to show her designs in a fashion show.

Tia and Tamera long for a space of their own.

Tia lands a job at the mall.  Tamera doesn't like Ray's new girlfriend.

Tia and Tamera fight back when they learn Tia is being paid less at her job because she is a woman.

Tia and Tamera decided to skip school and go to Chicago to see Boys II Men on their birthday.

The girls hire a tutor to prepare for the SAT.

Tamera promises a celebrity for their school fundraiser.

Ray and Lisa do not approve of Tia's new romantic interest, Tyreke.

Tia bets Tamera that she cannot tell nothing but the truth for a week.  Tamera sees Ray's girlfriend with another man.

Tia tries to find a boyfriend for Tamera when Tamera continually tags along on her dates with Tyreke.

Ray and Lisa give the girls a credit card for emergencies only.

Tia and Tamera try to reunite Lisa and her sister.

The girls and the boys have a battle of the sexes.

Tamera rushes an exclusive sorority at school.

Tamera tries to improve her chances of getting into a better college.

Tia is offered a job with the WNBA.

The girls sneak out to get into an over-21 club.  Lisa dates a younger man.

Tamera is reluctant for high school to end.

Tia, Tamera and Roger reminisce about their past.

The girls buy prom dresses but don't want to disappoint Lisa when she makes them dresses.

Tamera takes on being the housekeeper which means she will miss out on a party.

The girls and their friends prepare for graduation.

Tia and Tamera move into the dorms at college but have issues with roomates.

Tia perfectionism threatens her relationship with Tamera.

Lisa hires a new assistant.  Tia's self defense skills embarrass Tyreke.

Ray considers a run for state senate.

Tia has a crush on her calculus teaching assistant and ends up breaking up with Tyreke.

Ray supports a bill banning concerts on college campuses.

Tia and Tamera are out of town and Tyreke and Jordan agree to escort to lonely girls to the Homecoming dance.

Jordan goes undercover to expose having in a fraternity.

Lisa runs a "holy sweat shop" to make new robes for the church choir.

Tamera recounts her father's election campaign.

Tia refuses to take Tamera's place during a final; Vivica tries to bribe her way into Lisa's club.

Tamera and Jordan are caught in an awkward position as Tia and Tyreke start dating other people; Lisa falls for Ray's old frat buddy.

Tia and Tamera get competitive to get Tyreke and Jordan in the school calendar.

Tamera gets a job as a relationship expert on a campus radio station.

Tia and Tamera believe they have met their biological father.

Diavian and Jordan grow closer when they are partners in drama class.

Tamera is too sick to do her radio show and Tia volunteers to fill in but ends up chickening out and Jordan takes over.

The gang heads down to Atlanta for spring break.  Lisa tries to impress Victor's mother.

A music history lesson transports everyone to the 1940s.

Victor plans to surprise Lisa with an engagement ring.  Tia and Tamera make cupcakes with Lisa's ring hidden which Lisa inadvertently gives away to Jordan and Tyreke.

Tia must make a decision between the WNBA internship or spending the summer with Tamera and her biological father.

Lisa gets cold feet on her wedding day.