A modest young man lives in a big city among people and cyborgs, serving in a branch of a sub-rafting company. Due to a combination of circumstances, he becomes the object of attention from gangster groups, intelligence services - and even aliens who have flown in to return something captured on their planets by greedy space explorers. He is also mistaken for a famous environmental terrorist, and this makes the hero attractive to romantic girls and troubles associated with the police and the prosecutor's office...