Grace, a 15-year-old teenager, spends her free time playing Roblox. One day, Grace meets someone in the game who, seemingly innocently, quickly gains her trust. What Grace doesn't know is that this someone will completely change her life in just a couple of hours.

James Hernández, Mexico’s most wanted serial killer, carefully chooses his next victim. But what begins as another calculated murder turns into the one mistake that exposes him and leads to his capture.