Cate and Baze are paid a visit by a social worker whose job it is to evaluate both of them and determine if they are fit parents. Lux is torn when her boyfriend, Bug, and best friend, Natasha, suggest that Cate and Baze may not be in it for the long haul and that Lux should return to her old life and the people who love her most of all. Meanwhile, Cate is pressured by the executives at the radio station to deny that she has a daughter in order to save her job.

When Baze tells his parents about Lux, they insist on planning a dinner at which they can meet their granddaughter and Cate. Cate reluctantly agrees to go to the dinner and is further annoyed when her overbearing mother and neurotic sister show up unexpectedly. Meanwhile, when Cate hears about a gang fight at Lux's school, she immediately decides to have Lux transferred to her and Baze's alma mater, Westmonte.

Off to a rocky start at her new school, Lux offers to throw a party in Baze's loft in an effort to impress the high school quarterback, Jones, and his friends. Cate worries that her relationship with Lux will never measure up to the bond Lux has so easily made with Baze.

Pressured by radio station management, Cate and Ryan reluctantly agree to let Baze join them on air for what turns into a public therapy session. Lux tries to get Jones to drop the charges against her boyfriend, Bug.

Jones asks Lux to be his date for the Winter Formal. Baze finds a condom in Lux’s room, and thinking it belongs to Jones, shows up at the dance to try and stop Lux and Jones from having sex. Cate agrees to chaperone the dance, but being at her old high school for Winter Formal brings back painful memories about the night Lux was conceived.

After Lux and Bug are picked up by the police for a curfew violation, Lux's social worker decides it's time to meet with Cate and Baze to reevaluate their custody of Lux. During a meeting with the social worker, Cate, Baze and Lux agree to put on a happy face to ensure that Lux isn't placed back in the foster care system. Meanwhile, in an attempt to show Lux that she supports her, Cate offers to find Bug a job at her radio station, but winds up disappointing Lux once again.

With her wedding on the horizon, Cate decides to take a road trip with Lux to find her father, Gordon (guest star Peter Horton), who abandoned her when she was a little girl. Meanwhile, when Bug’s “friends” trash Baze’s bar, Lux invites Baze to join her and Cate on the road trip, allowing Bug some time to repair the bar before Baze discovers the truth.

Cate and Ryan return from their honeymoom only to discover that major changes have been made at the radio station in their absence. A very confused Baze struggles with his feelings for Cate, and ends up hooking up with the hot new bartender, Paige, at his bar. Meanwhile, Lux and Bug find themselves at a major crossroads in their relationship.