As Eva Thorne prepares to seal off the subterranean military complex, Zoe's life is endangered as her body begins to rapidly age.

Liz struggles to maintain her long-distance relationship with Floyd and must also use Kenneth's help in finding a missing Tracy. Meanwhile, Jack's marriage situation with Phoebe causes his mother to stop by.

While Mac dines at his local breakfast spot, a gunman opens fire, leaving a waitress critically injured and a man dead, and Mac having to choose whether to chase after the suspect or save the life of the young woman. Meanwhile, before the chaos, Mac was approached by a shy patron who awkwardly engaged him in conversation. After feeling that he saved her life during the shoot out, she asks him to join her for a drink and Mac must decide if he is ready to start dating after his wife's tragic death.

The Carver strikes at a sorority house. His identity is revealed. Ariel's dad kidnaps Matt and Cherry. Ariel's dad forces Matt to make a life threatening decision, while the carver tries desperately to get his last minute revenge. Julia discovers that there might be something wrong with her baby.

Death grants Peter's wish to go back in time to 1984 when he was 18, but only for one night. He ends up bailing on a date with Lois to hang out with a movie actress. When he returns to the present, he soon realizes that everything is anything but normal, as he is now married to the former actress, and Lois is with Quagmire. Meanwhile, Stewie, Chris and Meg have also taken on Quagmire's charming characteristics.