Lock, a beast tamer without a companion, had been assisting his comrades in an S-Rank group until they betrayed him by using him as a diversion and deserting him. Lock conversed with the Fenrir, the target of his party's assault, and as a result, it agreed to serve Lock as his new familiar. Using the "Mini Monster Garden" concept, Lock collects an increasing number of familiars to create the most powerful and lovable party in existence. It's a world where men and beasts embark on journeys together.
