Luigi has one night to save his theater, one of the most prestigious in Paris. One night to find a real monkey able to climb on stage and win back the esteem of his renowned Japanese director. One night to regain the trust of his team and the respect of his best friend, who is also his most trusted colleague. One night, finally, to prove to his young, overconfident and uptight trainee that there is a different way to face (a mountain) of problems: give priority to the one you find the most amusing.