Life was unsuccessful for Marine Lieutenant Colonel Arkady Serebrov after his retirement. He just can’t adapt to the new realities of post-Soviet life. And then my wife became seriously ill... Where can I get money for treatment? Suddenly an FSB officer appears with an offer to take part in a top-secret and extremely dangerous operation. For this he promises the Marine decent money. But there is a condition: Serebrov must recruit the team himself. The lieutenant colonel calls together his military friends, retirees like him. Old warriors willingly agree to participate in the operation, not yet knowing what tests are in store for them...