A story about a teenager dealing with the grief of his twin sister's suicide.

Erwan is 16 years-old and has just lost his other half. His twin sister, Eden, committed suicide. Ever since, he's suffered terribly and has distanced himself from his parents, the psychologist, his friends and his high school. Overwhelmed by guilt, Erwan can't help but dwell on old memories. And then, he discovers Eden's diary, which he didn't even know existed...