Frankie is excited over being invited to an adult neighborhood Halloween party. But will she be able to get Mike to dress up in a costume, or will he have his own idea of fun? Meanwhile, a melancholy Sue's spirits are lifted when she discovers that Reverend TimTom is back in town and hosting a Halloween church event; things don't go quite as planned for Axl, his friends or their dates as they head out to an exclusive haunted house party; and Brick chooses a unique Halloween costume that is not easily defined.

The Hecks are pleased to learn that Mike's brother, Rusty is getting married. However, the joy is short-lived, when they discover that the wedding is to be held at their house. Meanwhile, Brick cannot attend a party that same day, due to the nuptials.

Sue admits to Frankie that she kissed Sean Donahue at the Christmas party; Mike forces Axl and Brick to take a drive with him and Mike's dad.

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.