Gou, the protagonist, is a shut-in who doesn’t go to school. He is a master of the construction VR game “Build One,” ranked 2nd in the world, but one day, he is easily surpassed by his grandfather Akira. Akira challenges Gou to “come to my construction site if you want to raise your rank,” and Gou experiences cutting-edge technology that overturns his preconceived notions about the construction industry. In the midst of this, Akira collapses, and Gou, who rushes to the scene, is inexplicably thrown into the world of VR…