I Know What You Did Last Slumber / Lady and the Trampoline Know What You Did Last Slumber: Hailey holds a sleepover with Lucy, Becker and Kennedy so that she can complete getting an all-nighter. Kennedy goes to sleep early while Hailey, Lucy and Becker pull a prank on Scott. They attempt to craft bomb A.C.'s new jet ski, but it somehow detaches, rolls off a cliff and explodes. The girls become nervous and try to hide their involvement. The authorities blame Tina for the crime, but Hailey comes clean, only for Kennedy to conclude that it was A.C. himself who detached the jet ski causing it to get destroyed. A.C. admits the wrongdoing and is forced to do five hours of beach clean up. Lady and the Trampoline: After mocking Beta, Hailey is tasked with completing the Big Bounce at Trampoline Town. Hailey is afraid to do it because a trio of older kids mocked her when she tried to initially. She faces her fear goes there and Scott agrees to distract the teens while she completes the Big Bounce. She is forced to wear a mask when Bill Board adds a camera for everyone to see her try to complete it. Hailey manages to make it to the end, where she sweats up a storm, but finishes the task. She later learns that the older kids were not mocking her and were actually being helpful and that her self-consciousness caused her to assume the worst. Hailey, Scott and their new friends decide to do the Big Bounce together.