After a wild bachelorette party with Lysa's childhood best friend, the team wakes up in rough shape and hungover with no idea how they ended up where they are. They reconstruct the night by re-telling what they each do remember in order to figure out how they ended up here, and to prove to Lysa that her friend isn't who she said she is.

When Vikram attempts to return to 1847 (via a homemade time machine), he inadvertently travels the entire team back to the days of King Arthur, where they learn the truth about a Knight of the Round Table, Camelot, and Elaine.