Tsuyoshi Nakagawa

In the underground Diamond Domain, where many Carbink live, the Mythical Pokémon Diancie serves as ruler. The Heart Diamond that sustains the land is beginning to fall apart, and Diancie is not yet strong enough to create a new one. While seeking help from the Legendary Pokémon Xerneas, Diancie encounters a group of thieves who want to take control of its diamond-producing power–and who awaken the Legendary Pokémon Yveltal from its cocoon in the process! Can Ash and his friends help Diancie discover its true power, stop Yveltal’s rampage, and save the Diamond Domain?

Set in the mid-1970s, the film is based on the true story of Yoshiharu Yamaguchi, a teacher and former Japanese international rugby union player, who turned-around a failing high school in Kyoto, giving special attention to the rugby team, which included the most disruptive students among its members.

After participating to a previous show where they have to bet or be challenged to any kind of competitions, the losing members of the Gaki no Tsukai are selected to spend 24 hours in a setting which they have no knowledge of the theme nor the course of the events. They are exposed to various absurd and crazy situations nonstop for 24 hours and must refrain from laughing. If they do so, hang-men appear and hit the rule breakers with a weapon (the weapon varies every year).

The next generation of Manzai duos compete in a fierce battle of wits and laughter, unleashing their best material for a chance at comedic glory.