William Tell (Oscar Isaac) just wants to play cards. His spartan existence on the casino trail is shattered when he is approached by Cirk (Tye Sheridan), a vulnerable and angry young man seeking help to execute his plan for revenge on a military colonel (Willem Dafoe). Tell sees a chance at redemption through his relationship with Cirk. But keeping Cirk on the straight-and-narrow proves impossible, dragging Tell back into the darkness of his past.