The three YouTubers in question are called Jack (played by Danilo Gentili), Fred (played by Léo Lins) and Carol (played by Dani Calabresa). They are known for their videos about the paranormal, but are often criticized for their lack of credibility. In order to prove themselves, they decide to capture the spirit of the blonde in the bathroom, as she is a well-known entity that haunts schools all over the country.
To do this, they visit a school that is rumored to be haunted by the spirit. They bring along their equipment, including cameras, microphones, and other devices, and set up camp in the bathroom where the spirit is said to reside. However, things don't go as planned, as they quickly discover that the spirit is much more powerful than they anticipated.
As they try to capture the spirit, they are forced to confront their own fears and personal demons. Jack has a crippling fear of the dark, Fred is haunted by the memory of a failed relationship, and Carol faces scrutiny from her fellow YouTubers for being a woman in the male-dominated world of paranormal investigation.
Along the way, they encounter a group of rival paranormal investigators, an eccentric janitor who knows more than he lets on, and even the legendary Bloody Mary herself. In the end, they must put their differences aside and work together if they hope to succeed in their mission and finally gain the recognition they crave.