The Hecks decide to take a Spring Break vacation with the Donahues, but Frankie soon discovers that both families are going through their share of big problems.

Frankie decides that April is not good enough to be with Axl and does anything she can to keep her out of the annual family Christmas photo. Frankie must fight for Axl's attention when he announces that he will be spending Thanksgiving with April.

The Hecks find themselves spending New Year's Day attempting to stave off a zombie apocalypse in the Orson Escape Room, desperately trying to beat the Donahue's record of getting out with more than one minute, eight seconds to spare. Meanwhile, Brick is convinced that the mild-mannered man assigned to the family's Escape Room group is really the famous author of the "Planet Nowhere" books; Sue divulges a secret about herself to Axl that's she's been keeping since childhood; and Mike is stunned when Frankie reveals that she had a romantic dream involving Frank Sinatra.

Frankie and Sue are devastated when Axl informs them that he's not going to church; Mike goes to war with the Glossner kids after they keep defacing his giant inflatable snowman; Brick attempts to wrap his first present.

It's the Orson showdown of the century when the Hecks - along with the Donahues and Bill Norwood - wage a war against the Glossners after they steal Sue's car.

After nine hilarious and heartfelt seasons, a Heck leaves the nest as the family takes a road trip to Denver, where Axl will start his new job – and new life away from home.