Alison distrusts her family, but she must reside with them. Meanwhile, the girls adjust to Alison's return; recent occurrences trouble Aria; and questions surface when Mrs. DiLaurentis can't be found.

Ali wants to reclaim her leadership role in the gang, but the other girls aren't too keen on this. Meanwhile, students at Rosewood High await Ali's return; and as Aria sinks deeper into her depression, she finds comfort from someone unexpected.