Millions of years ago, a living DNA named Monsuno hitched a ride to Earth in an asteroid pocket. The impact of its crash landing on Earth drove the dinosaurs into extinction and the Monsuno DNA lay dormant until a scientist, Jeredy Suno, activated it. The activation of the DNA sent a rippling wave of movement back into action and may have reignited the end of the world. But Suno may have also created the world's salvation, the Monsuno monsters. Now a group of heroic teens, including Jeredy's son, Chase, must learn the secrets of Monsuno and help save the world from its impending destruction.
Lock is Chase Suno's first partner. He is a hybrid of a polar bear, a gorilla, and a tiger. Evo is also one of Chase's monsters. He is a hybrid of a condor and a swan. Chase combined Evo with Lock to form Lock 2.0.