Sissy

Sissy is a 2022 Australian independent horror-thriller film written and directed by Hannah Barlow and Kane Senes and starring Aisha Dee in the title role. Plot Young best friends Cecilia and Emma make a pact to be friends forever. Years later, an adult Cecilia is a successful lifestyle vlogger. While shopping at a pharmacy, she reunites with Emma, who calls Cecilia "Sissy" to the other’s chagrin. After exchanging contact information, Emma invites Cecilia to her engagement party, and later to her bachelorette party. Cecilia arrives at Emma and her fiancé Fran's house for the bachelorette party, and meets Emma's friends Tracey and Jamie. During the trip, Fran mentions that a girl named Alex, Cecilia's former grade school bully, is joining them. The car accidentally hits a kangaroo, and when they all exit the car to inspect it, Cecilia is especially horrified, imagining the bloodied, spasming creature as a young Alex. Fran insists on running over the kangaroo's head to put it out of its misery. Once they arrive at their destination, Alex treats Cecilia coldly, including belittling her career as an influencer, while the other guests largely ignore her. Emma later apologizes to Cecilia for Alex's behavior and encourages them to make amends. While at a lake the next day, Cecilia overhears Alex, Tracey, and Jamie badmouthing her. When Emma storms off angrily, all but Alex follow her. Alex asks Cecilia why she bothered showing up and steals her phone, which she uses to post a video on Cecilia's social media accounts, ostensibly "exposing" Cecilia’s true cruel, sadistic nature to her followers. While wrestling for the phone, Cecilia strikes Alex in the head with a rock, seemingly killing her. It is revealed that as a child, Alex had repetitively taunted Cecilia until the latter eventually struck Alex in the face with a gardening trowel, disfiguring her cheek.