Two teenage skateboarders, Jeff and Noodle, are the only ones in their peaceful town of Middledon who realise that the weird strangers from Neo Corporation are actually aliens. Jeff and Noodle do their utmost to prevent the aliens, led by the scheming Astrid and the bumbling Brian, from destroying their beloved skatepark and taking over the town.

When a cave in threatens the lives of four miners, including a father and son, it becomes a fight for survival. The superintendent (Mimi Rogers) struggles against the ticking clock to save her crew and family from impending doom.