A gang of bikers wrecks havoc.
Rich man who owns an island sanctuary is involved in some shady business. Meanwhile, his daughter... and also meanwhile, the tribe of hippies that are racing around on dune buggies...
The inmates of an insane asylum take over the institution, imprison the doctors and staff, and then put into play their own ideas of how the place should be run.
The criminal is hungry for revenge and bloody reprisal to the girl who sent him to jail.
