Three centuries after her departure from Asgard, Asta Heimdalldottir returns a new woman with a new purpose. While most of the gods are excited for her long awaited return, Loki, the god of Mischief considers her departure, the ultimate act of betrayal. While Asta claims to have changed for the better, Loki can't help but believe that she's hiding something, something ugly that neither of she, the gods or the nine realms can recover from.