Charles tells Cassie that he is joining the Army; Eddie solves a 60-year-old crime; the family helps Nate Ray deal with his emotional issues.

Nate Ray has trouble dealing with his emotions after returning home from Afghanistan; Cassie and Charles contemplate taking a break.

Aunt Naomie invites Cassie to spend her 18th birthday in New York City; Lizzie auditions for the school play; Jenn waits for a diagnosis on her illness.

Tay attends a singing contest hosted by R & B star Trey Songz; Jenn is stricken with a strange illness; Cassie learns that Charles has not made any real plans for the future.

The Suttons receive a letter from Nate Ray; Cassie goes to a club to get her mind off Charles; Lizzie and Andrew's relationship deepens.

Eddie and Cassie help Charles when he becomes disappointed with his new family.

Charles searches for his father with Cassie; Lizzie makes a shocking discovery when she tries to help a needy boy.

Bishop returns for revenge; Charles makes a decision about the money.

Lizzie tries to make new friends; Charles considers running away from his problems.

The police suspect foul play in the death of Charles' stepfather; Tay is rushed to the hospital after falling ill; Eddie and Jenn face financial trouble after the earthquake.

The Suttons fight for everything they have built when an earthquake strikes Lincoln Heights.

Jenn and Eddie agree to be chaperons at the prom; Charles and Sage attend the dance together.

Tay gets into trouble after he hangs out with a girl he met at the recording studio; Jenn and Cassie get involved in a protest.

Members of the Sutton household come to terms with Johnny's accident in different ways.

Eddie tries to prevent the release of the man who ordered a hit on his mother.

Eddie puts Tay in danger when he tries to stop a robbery.

Cassie becomes frustrated when Sage moves in with the Suttons.

Lund's strained relationship with Sage drives him to drink; Jenn is not happy when Mrs. Kingston is named to the clinic's board of directors; Lizzie is unhappy at her new school.

Cassie and Charles sleep together; Lizzie is recruited to attend a private school; the Suttons befriend a reverend and his family.

Thugs break into the Sutton home and hold Cassie and Charles hostage; Tay asks Ruben for help with his music and dance moves.

A car crash injures Charles; Eddie tries to protect Tay after a gang member threatens him.

Brenda Hampton, creator of "7th Heaven" is behind the drama about the ways a teen pregnancy affects the lives of close-knit friends and family members. When Amy finds out she's pregnant after a fling at band camp, she faces a number of challenges. Her decisions have far-reaching effects on her family and friends, but Amy also learns that most teens in her school have issues they must deal with.

Bay Kennish is a teenager who grew up in a wealthy family with two parents and a brother. Fellow teen Daphne Vasquez, who lost her hearing at an early age, was raised by a single mother in a working-class neighborhood. One day in her high-school chemistry class, Bay discovers that her blood type doesn't match either of her parents'. Official tests confirm that Bay is not her parents' birth child. When the Kennish family meets Daphne and her mom, Regina, they realize that the girls were switched at birth. The news prompts the Kennishes to allow Regina -- who is experiencing financial difficulties -- Daphne and Daphne's grandmother to live in their guest house. The two polar-opposite families struggle to learn how to live together for the sake of the girls, who try to keep their footing in both the world they know and the new one into which they are thrown.

Emily Kmetko's dreams of becoming an Olympic gymnast inch closer to reality when she receives a scholarship to The Rock training center in Colorado. But her natural abilities and lower economic status don't immediately make her any friends among the center's elite, who include top gymnast Payson Keeler, beautiful Kaylie Cruz, resident hottie Carter Anderson and ultracompetitive Lauren Tanner, who would like nothing more than to see Emily head back to where she came from. Amidst the backstabbing and bonding, they're teammates in name only, all in pursuit of what every gymnast competes for: a perfect routine.

Think of this drama series as a kinder, gentler "Revenge of the Nerds." It centers around a college freshman, Rusty, who's determined to shed his high-school geekiness and become a frat boy. Unfortunately, his older sister, Casey, is a sorority queen who isn't thrilled about having her kid brother in her Greek system. Rusty's roommate and fellow nerd, Dale, wants nothing to do with the fraternity scene but wouldn't mind getting to know Casey better. Casey's BFF is Ashleigh, who has good looks, a sunny disposition and terrible taste in men.

Stef, a dedicated police officer, is in a relationship with Lena. The two have built a close-knit family with Stef's biological son, Brandon, and adopted twins, Mariana and Jesus. When Lena meets Callie -- hardened from being in and out of foster homes -- the couple welcome her into their home, thinking it is temporary. Callie's blunt commentary about the atypical family hits a nerve with the twins, who struggle with their own identities. Then the girl discovers a secret that could land Mariana in trouble. Brandon helps Callie navigate the social scene at high school, but she skips school to meet up with an old friend. Her behavior makes Stef and Lena second-guess their decision to help her.

After their parents die in a car accident, the five Salinger siblings are forced to live on their own, with oldest son Charlie appointed the guardian of his brothers and sisters. Their new situation means putting aside personal goals to help make ends meet and keep the family together.

The Pearson family's generational story unfolds in this emotional drama. In moments of love, joy, triumph and heartbreak, revelations emerge from parents Jack and Rebecca's past, while triplets Kate, Randall and Kevin discover deeper meaning in their present day lives. Successful businessman and father Randall searches for information about his biological parents. Kate finds love and self-acceptance while battling obesity. Kevin pursues a more meaningful career, which brings some difficult choices.

"Bunheads" tells the fish-out-of-water story of Michelle Simms, a once-promising classically trained professional dancer who was drawn to the lights of Las Vegas, where she became a showgirl. After she impulsively marries her persistent suitor, she moves to his sleepy California coastal town, where he lives with his mother, Fanny, herself a former dancer. Fanny now runs a local dance studio. Michelle ends up bonding with some of Fanny's students after meeting them. Among the students are sweet Boo, who struggles with her body type; rebellious Sasha, who has the talent to be a ballet dancer but doesn't have her heart in it because of family issues; shapely Ginny, who's not comfortable in her own skin; and fun-loving Melanie, ready for whatever life throws at her. The students benefit from Michelle's knowledge, but she also benefits from them as they help her adapt to small-town life.