Holy Shit!

An architect, Frank Lamm (Thomas Niehaus), wakes up in a locked portaloo on a building site where a detonation is being prepared, with no memory of how he got there. As he tries to escape, he realizes his captor, Horst Wolff (Gedeon Burkhard), has set him up in this predicament. Frank must use his wits to survive and outsmart Horst before the building explodes.