Sasha is a new baby-sitter in the prestigious neighborhood of Coral Grove. She is set to baby-sitter a young girl named Zaley Viviers, whose mother Camille is a graduate of Winscott, the school Sasha attempted to go to for Pre-medical education, an opportunity she deferred due to the financial strain it would put on her family. Zaley's mother offers to tell the financial aid office about her good conduct, provided she takes good care of her daughter. Zaley and Sasha form an amicable relationship. Things take a turn when they have to go back to the park, against her mother's orders, to find Zaley's lost doll. Zaley ignores Sasha's instructions that she is not there to play and goes down the tube slide but doesn't come back out. Sasha frantically searches for Zaley around the park, but the only other people at the park are children with absent caretakers and are seemingly unconscious to the outside world. Zaley and Sasha finally reunite but are approached by another baby-sitter who tells Sasha that the baby-sitters are being eaten by whatever force caused the children to zone out. After ignoring the woman's pleas to leave, Sasha and Zaley make their way back to Zaley's house. Zaley complains of pain. Sasha finds a large, yellow boil on Zaley's cheek and attempts to clean it for her. Zaley backs away from Sasha's attempts to touch her neck further. Zaley attempts to strangle Sasha using a yo-yo, wounding her neck and face. Sasha attacks back in self-defense. Camille comes home and finds Sasha frantic and tells her about what Zaley did. She walks further into the house to find Zaley, who accuses Sasha of instigating the fight. Sasha meets up with her brother Marco and his friend, Darius, whom she tells about the aforementioned events. After her and her brother talk, Sasha sees the entire playground sink into the ground. Darius is still outside of the truck by the time Sasha warns him and is impaled by the rungs of one of the playground structures. Marco approaches the playground and finds himself trapped in a green-lit tunnel with a strange girl approaching him. Marco manages to escape but as him and Sasha are turning to leave, she hears Zaley's voice and is knocked to her feet by a swing, while she is down she is dragged into the slide by an invisible force. Marco injures his foot on the playground and finds the house of Frances, the baby-sitter who warned Sasha earlier. He pleads with her to help him. She explains that creature behind this uses children as
sleeper agents to lure in baby-sitters so that they can be consumed by the hive mind. She tells them about the first victim, a fellow baby-sitter, Mabel Grace, with her disappearance being the only reason that she stayed in Coral Grove. Marco uses a rope to lower himself down into the playground's tunnels in hopes of finding his sister. Throughout the tunnels, he finds many people controlled by the hive mind before he is able to find Sasha. He frees her by pouring a bag of candy, given to him by their father, onto the part of the hive mind containing Sasha. This weakens the hive mind, causing it to release Sasha. As they attempt to escape the tunnels, the agents controlled by the hive mind approach Sasha and Marco. Sasha finds the child being used as a host body for the hive mind. She attempts to help her remember who she actually is, figuring out that she is Mabel Grace. Sasha is dragged out of the tunnel by Marco. They get into a fight, having very different opinions on how they should handle this. Sasha attempts to reopen the tunnels but the hive mind has closed them. With the help of Frances, they burn though all of the tunnels with a sugar concoction they made. Sasha is confronted by Camille and Zaley while she is attempting to burn through the tunnel at the original playground. Camille walks into the playground and is taken over by the hive mind, which summons other agents of the hive mind to come towards Sasha. They are repelled back by Marco who pours the sugar mixture all over them. Despite their attempts to flee, they are dragged back to the playground by the agents. The agents break Marco's leg. Sasha manages to escape by using the weed killer that Marco and Darius had in the bed of their truck, which is made of syrup and sugar. She climbs to the top of the playground and dumps the vat of weed killer into the tunnel, effectively disintegrating the hive mind and allowing those it controlled to escape. She helps Mabel Grace into the bed of the truck, with her and Frances reuniting. Sasha drives Marco, Frances and Mabel Grace to the hospital, but not before eating from the bag of candy their father gave them. ==Cast==