Evacuate from the 21st Century

On Planet K, unknown to anyone on Earth, three teenagers chosen by fate can travel back and forth twenty years into the future by sneezing. In the face of a shocking plot to destroy the world, they have nothing but crystal-clear stupidity and single-digit combat power, so how can they transform into heroes and fight against the super-villainous villains who are intent on destroying the world? The "King Bomb" brothers, who look like grown-ups but have minds like no other, will save the future on behalf of the K-Star!