The protagonist Al was too self-indulgent and got kicked out of his family home. Thinking that if he made a name for himself he could return to his old lifestyle, he impulsively became an adventurer, but looking around there were only parties. So he decided to add a strong-looking mage named Elsa to his group as well... But in reality Elsa is a woman who is beautiful 'only' in appearance, while her personality is unbelievably nasty...! On top of that, the contract Elsa handed him has small writing that says 'Leaving or dissolving the party is not allowed except when I cancel the contract. If broken, a body part will be removed', so he cannot even fire her... Feeling tricked and outraged, Al decides to use force. His plan is to do lots of lewd things to Elsa in an erotic trap dungeon and forcibly make her cancel the contract