Freya was sent to Earth by Odin for many different reasons. His main reason being that it was for the safety of Asgard, yet Freya couldn't help but think that it was a bit far fetched. After having S.H.I.E.L.D. after her for years now, she is finally caught and sent to the base.
Little did she know, she would be encountering plenty of humanly problems, one including facing her natural nemesis, Loki for what seems like the millionth time.