One day while swimming in the sea, he thinks he sees the body of a dead boy with a red starfish at his waist.

Victor runs back home, but Nicolas sees the women lying together completely nude, writhing around in mud, and passing around an object from one to another.

At home, he sneaks a peek at his mother as she is showering off the mud and observes that she has what appears to be suckers on her back.

Nicolas' drawings include a dead boy and starfishes but also a bicycle, a car, a building, and a giraffe.

Stella shows Nicolas a file with pictures of women with suckers on their backs, including one of a young girl.

Nicholas goes back to the hospital and after awakening from a nightmare, sneaks into another room where he finds one of the boys.

They again enter the water, but this time she presses her mouth to his as she swims with him, giving him air to breathe underwater.

Nicolas stays on the boat and by nightfall finds himself approaching the harbour of a major city.

The site's critics' consensus reads: "Creepy, provocative, and aesthetically absorbing, Evolution marks a satisfying step forward for director/co-writer Lucile Hadzihalilovic.