Stiles is suspicious of a new classmate; and Lydia helps a student with night terrors.

Scott tracks a new shapeshifter that's threatening Stilinski; and Malia receives information about her mother.

Stiles works on tracking down a fugitive; Liam tries to be Mason's wingman at a nightclub.

After following Dr. Valack's advice, Scott and the others begin to experience strange things.

Kira and her mother make a journey to help Kira deal with her dark side; Lydia is surprised at Eichen House.

With graduation approaching, a supernatural force rides into Beacon Hills and crosses paths with Scott and his friends, while Liam discovers evidence of a new enemy in the high school.

Trapped within the Wild Hunt, Stiles reunites with an unexpected ally; Scott, Lydia and Malia learn that Stiles' Jeep may be connected to his disappearance.

Scott, Lydia and Malia have to take drastic measures to quell the growing violence in Beacon Hills, while Liam endures his own gauntlet at the high school.

Scott and the others must make a discovery before it’s too late.