A group of friends attend the wake of a child they accidentally killed with their car. Once at the wake, they find themselves trapped and stalked by a masked assailant.

Amigo Undead is the story of Kevin Ostrowski as he attempts to reconcile with his estranged, underachieving brother Norm on a camping trip. They're accompanied by several of Norm's unusual friends. When one of these friends dies accidentally, the decision is made to bury him out in the desert with some very unforeseen supernatural consequences.

The kids are thrilled that Bernie has come back. But so has their old enemy Winston, who's about to kidnap the talented dolphin. Kevin and Holly must rescue their splashy friend before it's too late.