Han Seo-jin is a top ranker of Pick Me Up with an account name of Loki. Due to a bug he encounter while clearing one of the top floors inside the game, he was summoned inside the game as a hero… a Level 1… 1-Star Hero… Loki, the once called, master of masters, is now a [Level 1] [1-Star Hero] that must follow the orders of his master. However…