When former best friends Rowan and Hailey find themselves tagged in an online video showcasing a murder, they begrudgingly team up in a quest to find the third girl tagged, outcast named Elisia, to determine if the video is real or a prank.

Mysterious user "monkeyman" invites the girls to meet him at midnight, while Rowan's hacker sister, Brie, discovers he's not only sending them clues via text, but also posting stalker videos of them online.

When the virtual threats escalate to the point of revealing the girls' biggest secrets, they have no choice but to meet Monkeyman at an old motel.

After receiving a hostage video, the girls are forced to keep quiet until they figure out who Monkeyman is before time runs out.

With no other choice, but to loop in Elisia's drug dealer exboyfriend, Ash, on their secret, the girls make a desperate plan to save their friend before it's too late.

The countdown continues and Hailey receives a threat that she'll become the next victim. When she goes to visit Ash for a fix to help calm her anxiety, she discovers the threat of Monkeyman is real and very deadly.

With Monkeyman threatening the school assembly tomorrow and the countdown at 48 hours (the night of the big party), the girls list possible suspects and find a surprising one in their midst.

The girls focus on stopping the school assembly from happening before Monkeyman hurts anyone. In apparent retribution, Monkeyman begins revealing their biggest secrets.

As the girls get closer to exposing Monkeyman's identity, they are made to pay the price. Exhausted and defeated, Rowan is terrified to learn that she is next on the chopping block.

The girls get closer on their hunt for why Monkeyman is after them. However, a corrupt hard drive appears revealing something they never expected.

The group heads to the big party on the final night of the countdown. The final puzzle pieces are placed together and the truth is revealed.