Charlie sleeps with Kandi's mother, as Alan tries to win her daughter back; Kandi arranges a date between her father and Judith.
As Valentine's Day approaches, Ryan worries that the pressure of the holiday will ruin his relationship with Taylor.
Newly engaged Seth and Summer both panic about the prospect of being married, but neither will break it off, despite the advice of their friends.
Ryan, the Cohens, the Coopers and their friends build new lives, resolve lingering issues, face major decisions and undergo shocking personal transformations.
Taylor eagerly prepares for her first real birthday celebration, but she frets over the fact that Ryan has still not told her he loves her.