When Brian accidentally kills another dog he is surprised to see that no one cares so he tries to convince everyone that the life of a dog should have the same value as a human one. Meanwhile, Lois hires a maid who doesn't listen to Peter.

After Peter hits his head and develops amnesia, he forgets everything, including his family and his friends. Lois takes extra care of Peter and tries everything to jog his memory and until he starts hitting on other women. Fed up with his antics, Lois takes the kids and leaves, giving Quagmire his opportunity to swoop in and score.