When her boyfriend Sergei vanishes after starting a new job at the secretive Devs division of tech company Amaya, software engineer Lily begins to suspect that his disappearance may not be as clear-cut as it seems.

Lily enlists ex-boyfriend Jamie’s help to investigate Sergei’s disappearance. She begins to question what she really knew about Sergei.

Lily returns to work at Amaya and explains her suspicions to Jen and Anya. Forest is visited by Line, a powerful senator asking questions about the Devs project.

After Lily’s behavior at Amaya, Kenton forces her to see a psychiatrist. Meanwhile, the Devs team disagree over the ethics of their invention, and Forest asserts his commitment to the project.

Lily and Jamie visit Forest looking for answers, and Katie reveals to Lily the true nature of the Devs system.

The Devs team perfect the system, and Forest and Katie wait for the completion of the Devs project. Lily and Jamie try to avoid its threat, but a visit from Kenton leaves Lily with no choice.

Lily arrives for her final confrontation with Forest and Katie.