Chase Suno and his two best friends, Bren and Jinja, learn that Jeredy Suno (Chase's father and a scientist who worked for S.T.O.R.M.) is missing. Jon Ace and S.T.O.R.M. (Strategic Tactical Operatives for Recovery of Monsuno) join Chase at the lab, but it is soon revealed that they are after the fully-loaded core that Jeredy left behind for his son. Chase learns how to use his Monsuno, which he names Lock.