Paige throws Emily a surprise birthday party with unexpected guests: Jenna and Shana. Meanwhile, Mona helps out Hanna and Ashley; Ezra receives some upsetting news; and Emily meets with a prestigious swimming coach.

The girls try to corner "A" at their school's hoedown. Meanwhile, Hanna is stalked by a classmate who has an explosive secret; Ezra seeks help from Aria just as she decides to commit to Jake; and "A" continues to manipulate Toby by promising to reveal info about his mom's death.