Kohei Arimoto, an office worker who has finished his overtime work, is on his way home when he is transported to another world due to a mistake by God. As an apology, God gives him rejuvenation and magical abilities, and when Ko wakes up, he finds himself in a mysterious forest where there is no sign of life. While staving off his hunger with vegetables and fruits that never run out even after harvesting, he continues his search out of the forest and discovers that this is a place protected from ferocious monsters and beasts by God's warding. One day, however, while living a life of survival, a griffon, claiming to be God's messenger, appeared before him. He said, 'It is by some chance that we have met here. Shall I take you to the place of the human race beyond this forest? Kou finally escapes from the forest surrounded by magical beasts and vows to use the magic he has been training for three years to survive in the other world without being disturbed. He cooks with the ingredients he has been harvesting in the mysterious forest and the meat of the monsters he has defeated, builds a garage like a secret base with magic, and so begins his freewheeling life in another world!