The Yellowjackets are stuck deciding whether to track down a missing teammate or just trip out on mushrooms. Shauna secures a spot on the world's most unsupportive partner list. Misty finds herself tangled in the intimate chaos of sleepover parties.

With a possible escape from their nightmare, the Yellowjackets learn not everyone may be in a rush to leave. In the present, the unexpected return of an old teammate sends Shauna spiraling in ways that should probably concern everyone.