Lorelei, an Asgardian seductress, arrives on Earth with plans to build an army, get riches, and take over. Lady SIf arrives in order to capture Lorelei and take her back to Asgard.
Lorelei can convince men to do whatever she wants. During the raid, she controls Ward and he takes her to Las Vegas. They take control of the SHIELD plane. Coulson, Skye, and Simmons help save Lady SIf, so she can capture Lorelei.
No one is injured, but Ward's relationship with May won't be the same after Lorelei reveals May's not the one for him.
May convinces Coulson to share the truth about what he saw in the basement. The substance that cured them was alien. May overhears and reports to someone that Coulson knows the truth.