A Russian nuclear submarine disappears in American waters, putting Elizabeth in a tricky situation; Stevie ends things with her boyfriend.
When an informant is kidnapped by a crime boss and taken to Chernobyl, the team set out to find him. Meanwhile, Bozer has trouble keeping a secret from Matty.
The Task Force infiltrate a high-stakes poker game tied to Wujing with the help of new team member Siya Malik; Red and Cooper have opposing tactics when Agnes is bullied at school.