Grayson Hawthorne is used to putting family first, but when his billionaire grandfather dies and disinherits the family, Grayson's loyalty is tested. Meanwhile, his risk-taking half-brother, Jameson, is asked by their mysterious father to infiltrate an exclusive underground gambling club in London. As they both become embroiled in twisted games, the brothers must decide who they want to be and what they are willing to sacrifice to win.