Peter encourages Joe (Patrick Warburton) to have a one-night stand with his attractive new partner (Anna Kendrick, "Up in the Air") in order to even the score with Bonnie (Jennifer Tilly) for her own indiscretions. But when Bonnie finds out and threatens divorce, Lois (Alex Borstein) insists that Peter get them back together. Meanwhile, Peter has another run-in with the angry chicken which makes for yet another epic fight.