Isabella Montoya struggles with her new assignment as a Watchmen, a private detective who not only solves crimes, but must distribute the punishment. Her executioner, Cecilia, promises to show her the ropes and helps her complete her first warrant.
Isabella is horrified to meet her new Dicer, Walter Baker. Before she gets a chance to fire him, they are hired by a woman to find her father's killer. While investigating the murder, Isabella and Walter quickly realize they're in over their heads.
Isabella and Cecilia get a chance to bond as they attempt to serve a warrant on a deadly criminal. The night doesn't go as planned as they find themselves as the prey. Meanwhile, Walter moonlights for an old friend, where he begins to open up about his past.
The Watchmen are hired to find the killer of a young college student. While it seems to be open and shut, Isabella drags her heels on executing the warrant and finds herself back on the Marlow Case, which leads the Watchmen into a dangerous encounter.
While Cecilia and Walter visit a potential witness who could shed light on the Marlow Case, Isabella must confront the killer face-to-face. Both the investigations lead to a suspect teaming up with the detectives to bring down the Donovan Corporation.
After a devastating loss, the team must come together in order to serve a warrant on Johnson. To survive, they're going to have to make personal sacrifices, learn to trust each other and move on from the past. Meanwhile, Donovan Corporation has sent more roadblocks to prevent the Watchmen from discovering their intentions.