«To save who you care most, would you join your worst enemy? And would you fall in love with her? »

Elena, Evelyn's mother, is ill and will soon die. The medicine that can save her is too expensive, but a men-only tournament will soon be held to decide Princess Saraya's fiancé. Join Evelyn and Moon Mask, a mysterious thief who seems very interested in helping her, on an adventure through the vast lands of the kingdom full of enemies, treasures and surprises. Will love ever arise? When the time comes, dress up as a knight, defeat your opponents, and claim the right to marry the princess and use her fortune to save your mother!