Hanbin Ryu has recently finished his military service and is drifting through life when he is suddenly pulled into another world. He is given a guide line, a system meant to help him survive and grow, but it is riddled with errors. Because of them, he stays stuck in the tutorial stage for more than twenty years. When he is finally freed from that personal hell, he discovers that everyone has turned against otherworlders like him. Now this low-level newbie, a product of an absurdly long tutorial, has to find a way to survive. The story is a fantasy adventure that mixes action with comedy.