Yogi Bear and Boo-Boo discover aliens who plan to conquer Earth.

One spring, Yogi Bear and Boo Boo Bear awake from hibernation to discover three orphaned bear cubs left at the front door of their cave. Despite their initial reservations, Yogi and Boo Boo take the bear cubs into their home and take care of them. Meanwhile, Jellystone Park has gone over budget and the park commissioner orders Ranger Smith to close it down. This means that Yogi, along with the other bears at the park, must be sent to a zoo. Because Yogi can't stand the thought of being cooped up in a zoo for the rest of his life, he hatches an elaborate escape plan. Salvaging car parts from a failed fishing expedition, he constructs a getaway "Supercar," complete with a picnic basket rumble seat for the three orphaned cubs. Together they make their escape from the park to find a new home.

Thirty years after a murder on the night of Avalon Bay's graduation dance, the sleepy town's teens meet grisly ends at the hands of a prowler once thought to be a jilted soldier home from war.