In a desperate hour, five teenagers choose a bankrupt amusement park to let loose and pursue a fantasy. Darrin, his girlfriend Chloe, his best friend Stick, the group clown Sanj and Darrin's tag-along kid brother Justin "borrow" their group home counselor's car for a day of escape at Wonder World. Fueled by booze, drugs and unspoken tensions between them, the friends revel aimlessly through the silent rides in search of Ben, a notorious and apparently teen-friendly security guard. Ben allows them to stay, but in return exacts the most private of fees. Soon the rides are alive, but the fantasy holds little solace for those facing demons. Darrin hatches an alternative plan, and by trapping Ben in the dizzying Zipper, they succeed in commandeering the rides.