One rainy and spooky Halloween night, three brothers- Jeremy, Stephen, and James -set out to explore the mysterious Blackwell Mansion, a legend in the town of Pineville. Their best friends, Brandon, and Sheila, are also eager to have some Halloween fun and agree to join them on the adventure. The five children have no idea that the mansion holds more secrets than they can solve in one night.

As the group wanders around the abandoned house, two of the kids get separated from the others and experience something very strange and creepy. Once the five are reunited, they head for home-but their encounter with Blackwell Mansion is only just beginning. Their presence may have triggered something unexpected. The group of friends decides to return to the old building and discover all the house's secrets. They eventually form an investigating group that they name PIC-the Paranormal Investigators’ Club-5 because there are five of them. But back at the mansion, they face scary supernatural events that make them wonder if they can make it out safely.

Luckily, along their journey, they discover the new resident of the mansion and develop a friendship with her. Danielle aids the children in their exploration but has ulterior motives. She is eager to uncover the history of her family legacy, believing the house may have taken her mother! Ultimately, Danielle and the children fight side by side to survive the paranormal and mysterious events inside the enormous mansion.