When bullied high schooler Hajime Nagumo and his classmates are transported to a fantasy world, they discover they have various magical abilities.

While his classmates deal with his absence, Hajime finds someone deep inside the labyrinth.

Hajime and Yue learn about one another's stories as they descend deeper and deeper into the labyrinth.

Hajime and Yue face a dangerous opponent who blocks their way out of the labyrinth.

Hajime and Yue stumble upon an oasis inside the labyrinth that contains a spectre.

Upon reaching the surface, Hajime and Yue find a rabbit girl waiting for them.