Dino takes Gokudera and Yamamoto to an unexplored area where Tsuna is supposed to be receiving special training from Reborn, but meet up with Tsuna, who had gotten lost, along the way. As the four teenagers come face-to-face with numerous dangerous obstacles, it becomes clear that someone has planted traps for them. Then Reborn appears to tell Tsuna that the place they're visiting is built exactly like Death Mountain, a secret Vongola training ground that has a survival rate of one in a hundred!
Our training won't go very far if you can't even handle this.
Unser Training wird nicht viel bringen,
wenn ihr nicht mal das schafft.
El entrenamiento será en vano
si no pueden con esto.
El entrenamiento será en vano
si no podéis con esto.
Nosso treinamento não vai render
muito se não puderem lidar nem com isso.