Zak, Cloe, Kiet and Fenzy are four unpopular guys from Earth who are not talented in sports. One day they find bracelets that have the power to transport them to another dimension. There they know Tänpo, the master, who explains that the empire of Zorn is conquering all dimensions of the Multiverse. The Earth is in danger and, if they want to save it, there is only one way: they will have to overcome their weaknesses, learn the art of Sendokai to become warriors and win the Grand Tournament of the Multiverse.