Steve goes crazy on a Year 2000 "Y2K" millennium planning, ignoring or avoiding planning a holiday trip with Janet. Noah becomes openly hostile to Matt after he is hired to sue Noah's late father's oil company for environmental pollution in a class action suit. Meanwhile, Katie returns to David and wants to move forward with him, without sex. While babysitting her half-sister, Erin, in her mother's apartment, a hidden camera catches Kelly and Matt having sex in which, as a result of circumstances, ends up in Gina and Dylan's hands. Wayne, a fashion model, makes a play for Donna while Noah pressures her to keep her distance to the guy. Also, Dylan and Kelly deal with the fallout after their fling in Mexico is found out by Gina.