Stan fears he may not be Hayley's real father, so he goes back in time to find the truth. In doing so, he disrupts the past and must save the future.

Hayley takes extreme measures to help Klaus from being deported while the rest of the family tries to open a coconut.

Hoping to teach him the value of sharing, the family recreates a television show from Klaus's childhood. Roger has a piano recital.

When Stan discovers anonymous love letters written to Francine, he worries that this secret admirer could threaten their relationship.

It's Halloween night and Stan is missing, so the Smith gang heads to the spooky, abandoned CIA headquarters to investigate.

Hayley and Jeff take a staycation at a nearby luxury resort, while the CIA is forced to rebrand.

Stan attempts to live forever in order to do everything on his bucket list.

To save their marriage, Jeff needs Hayley to open up more to him, but she wants no part in it.

Stan uses a mothballed military computer to do Steve's math homework, starting the clock toward nuclear annihilation.