Experiment #644

Three young boys, Rocky, Colt and Tum Tum together with their neighbor girl, computer whiz Amanda are visiting Mega Mountain amusement park when it is invaded by an army of ninjas led by evil Medusa, who wants to take over the park and hold the owners for ransom. Kids and retired TV star Dave Dragon, who made his farewell appearance at the park at the time the ninjas appeared, have to break Medusa's vicious plans.

After witnessing her husband's brutal murder, Carla travels to her parents' home in a small mountain town to start over. When she's repeatedly harassed by redneck locals, Carla seeks help from the town sheriff but is met with indifference. This continues until Carla's finally attacked, raped, and her parents executed by the twisted townies. Carla, after escaping a mental hospital, resolves to get bloody revenge.