At a frat party Steve hosts at Casa Walsh, things take a turn for the worse when Steve's two teenage half-brothers, Ryan and Austin, start drinking excessively in which Ryan passes out and almost dies from alcohol poisoning. When Rush finds out, being arrogant and narrow-minded as usual, naturally blames Steve for the near-disaster. Valerie brings Colin to the party, who's between incarcerations. Meanwhile, Tara gets out of rehab and moves in with Kelly, Donna and Clare at the beach front apartment. Also, Kelly invites Greg, a med-student from the rehab center, over to the party and whom ends up saving Ryan's life.