After the loss of its divine beast, House Moonreppe is on the verge of collapse. Desperate to save his household, the young Duke Edenver Moonreppe decides to summon a legendary beast to become their new divine beast. He’s prepared to take on whatever monster that is summoned, only to meet baby dragon Acille. Edenver is not sure such a small creature could be their new divine beast… until he discovers that this baby dragon packs quite the punch in terms of both power and loveability. Will Acille change Edenver’s life for the better in more ways than one?