"What does your paradise look like, then?" - "Dark. Quiet. Wet. And full of fish." Jan likes Shakespeare, water and fish. Nina likes roller-skates, cars and brightly dyed hair. Jan loves Nina. Nina loves Jan, but ... Do Fish Do It? is a film about first love, the problems of growing up, the vital question if fish have sex and a threat this love is exposed to. 16-year old Jan is absent-mindedly strolling through the streets when he"s run over by roller-skating Nina. As fast as she has stormed into his life, however, she rushes off again. Nina is 15 years old and full of crazy ideas. She lives together with her brother, her father and his new girlfriend. Her mother isn"t in touch much. That"s why there is the unconventional Angel whose own daughter disappeared years ago and who is Nina"s best friend and substitute mother. Jan is a little shy, with a sheltered upbringing. Yet the image of the perfect family is an illusion. Jan feels lonely and the only person who seems to understand him ...