A Sinful Camp puts players in a concentration camp during the war. Players will take on the role of Spike, who has been secretly in love with Anna for many years. However, a cruel truth has been revealed. He has seen a scene that he will never forget in his life. The goddess he has devoted all his heart to is being abused in the cell next door. His lustful desire arises, along with anger and compassion. Everything comes together to create a fascinating psychological story.