Loki wasn't the only baby taken from Jotunheim, he wasn't the only child of Laufey taken to Asgard and raised next to Thor. Eirlys Odinsdottir. Loki's twin sister. Odin's beloved princess. The snowdrop of Asgard. And missing. As a small child Eirlys vanished from Asgard, leaving Loki without his other half, his twin, his partner in crime, his best friend. There was nothing for him to do. Now, centuries later, Loki is an Avengers, in a committed and healthy relationship, and is suffering through headaches and visions, like someone is trying to reach out to him. And he has no choice but to follow the clues. What he and the other Avengers find though, none of them were expecting. The North Star has a history with many of the Avengers: enemy, teacher, lover, sister. And they all agree on one thing; they must remove her from Hydra's hands.