Jungle Jail/监狱竞技场

This animation employs the montage skill to compare a thin and weak prisoner's daydreaming and his reality. The ending imitating part about how they fell in the jail is kind of like the "A Bug's Life".

Full animation:

Directors:
Mathieu Arnoux, Hugo Cierzniak, Bruce Nguyen Van Lan, Aymeric Palermo, Stepaschka