When a wild night in Amsterdam for three ex-Navy men ends with one found dead in his hotel room, the Fly Team must dive into the red-light district to hunt down his killer. Meanwhile, Tate finds herself in a bind with her ex over custody of their daughter.

When the owner of a prominent cyber security company is murdered in Copenhagen, mass amounts of data are leaked, sending the NSA to the Fly Team for assistance, including the Bureau's liaison to the NSA.