Hajime Nagumo, hero of this series found himself in a dark. He fell pretty deep into the Great Orcus Labyrinth.
He has to go to upper level to go to his home and classmates. He started to find the stairs to go up. Suddenly he saw a rabbit.
The monsters in the deeper levels were tougher. Than bunny killed a monster and then the bunny found Hajime and started attacking on him.
Another giant monster got appeared and killed that rabbit on one shot and ate that rabbit. That monster attack on Hajime and Hajime lost his left arm. That monster ate his hand in from him.
Hajime has special ability of manuplating rocks called Transmute by which he save himself from that monster
He started to find the stairs to go up. Suddenly he saw a rabbit. The monsters in the deeper levels were tougher.
Than bunny killed a monster and then the bunny found Hajime and started attacking on him.
Another giant monster got appeared and killed that rabbit on one shot and ate that rabbit.
That monster attack on Hajime and Hajime lost his left arm. That monster ate his hand in from him. Hajime has special ability of manuplating rocks called Transmute by which he save himself from that monster
 A holy crystal has been discovered by Hajime from which the saturation of mana turns to liquid and start flowing from that crystal.
Liquid is called the holy water which has ability to heal any injury and dispel any curse which helped him to get healed.
His classmate has gone to Labyrinth to kill monsters. A giant monsters appeared in Labyrinth where one of Hajime classmate abandoned him and due to which he fell deep into the Great Orcus Labyrinth.
Hajime don’t want to die in the Great Orcus Labyrith so he decide to kill whoever come in his way.
He killed a monster and eat that monster and get stronger by gaining the monster abilities. With those abilities he made some weapons and killed the another rabbit monster and ate that monster too
He got more abilities after eating that rabbit. Now its revenge time. So he fought with that monster who ate his hand.
He also ate his hand in from of the monster and finally killed that monster and gain more abilities. After this journey to his home got started which we will see in next episode.