He spends his days in the company of his mother and his lifelong friend Secco, as well as conversing with his own critical conscience in the form of an anthropomorphic armadillo.

One night, he is devastated to learn by email that Camille, a childhood crush from Toulouse to whom he never confessed his love, has died as a result of anorexia.

These include his actions resulting in him and a coworker at the airport being fired, lying about his skills in a job interview to become a graphic designer and breaking their vow by attempting to regain a sweater in a fit of nostalgia.

In addition, the student that he tutored is sent to a monastery after experiencing a religious calling, ultimately inspired by Zero's own talks about politics and ethics, thus making him unemployed.

At that point, the Armadillo explains what his "prophecy" refers to—in essence, any overtly optimistic and rationalized hope one might hold, despite all reason.

He is woken up by the Armadillo after spending the night on a bench, who immediately resumes to berate him as usual and demand radical changes in his behavior.

The film ends with the moment when Zero, Secco, Greta and Camille make their vow, accompanied by a voiceover from the adult Zero reflecting on their lives.

[4] In both the graphic novel and the film, one of Camille's favorite songs is "Motivés, le chant des partisans" by the French group Motivé-e-s.