The year is 1943 in Trondheim (Norway) and the Nazis are trying a new experiment to create "Super Soldiers", but it doesn't succeed. The Germans canceled the experiment and ordered the chemicals dumped in a lake in Sweden called Önsjön. During the mission, the Swedish military open fire at the German soldiers and the bottom of the lake became a Nazi grave. 30 years later, some teenagers are going to a music festival at Önsjön during their summer break. Party, beers and naked bathing - it seemed to be a great festival, until the dead began to walk again.
Kajsa Steen
John Andersson
Gustav Ekerlöv
Lenny
Valle
Majsan
Siri
Marie
3-D
Korken
Johan
Mr. Steen (Kajsa's father)
Önsjömannen
Male gym teacher
German scientist
SS officer #1
SS officer #2
Prisoner
SS guard #1
SS guard #2 / SS soldier #2
SS soldier #1
Swedish soldier #1
Swedish soldier #2
Female gym teacher
Mrs. Steen (Kajsa's mother)
Alexander Steen (Kajsa's brother)
The Zombie
Man rowing #1 / Party goer
Man rowing #2
Sun-bathing girl #1
Sun-bathing girl #2
Tough guy at the beach
Vocalist, Gerry and the Germans (as Dan the Man)