In a world of extraordinary powers, Echo's ability to rewind and copy brief moments in time is considered weak. Determined to prove that strength isn’t everything, Echo fights alongside his powerfull friend Vanguard and the brilliant strategist Astra, to climb the ranks of the Hero Association.
But as they rise, the gap between power and purpose grows wider. When he is forced to confront his own limitations, Echo must decide: will he fade into obscurity, or redefine what it means to be a hero?