Thor's Lady Sif (guest star Jaimie Alexander) has traveled to Midgard aka Earth on the hunt for the deadly fugitive Lorelei, who has the power to enslave men's minds. To stop her from building an army and terrorizing the realm, Lady Sif must join forces with Agent Phil Coulson and his team to track her down. How does an Asgardian warrior like her fit in with the team? Take a look for yourself!

When an Asgardian tells you you're in trouble, you pay attention! Watch Lady Sif and the team's hunt for Lorelei in an all-new episode of Marvel's Agents of S.H.I.E.L.D. TUESDAY 8|7c on ABC!