Twisted Fate and Graves were partners in crime for many years, hustling far and wide across Valoran together with their crew (members include Kolt, Wallach, and The Brick) They parted ways when a heist went south, with Graves getting sent to The Locker despite Twisted Fate's efforts to save him (the entire crew dying in the process)
In the years after, Twisted Fate continued conning people solo, one time evading capture by Miss Fortune and Rafen (her second-in-command) She would later hire him by proxy to sneak into Gangplank's warehouse, where he would reunite with Graves (who was tipped off by the Bounty Hunter herself about Twisted Fate's presence) to unwillingly 'settle the score'.
Twisted Fate and Graves were used as a distraction by Miss Fortune so that her crew could make preparations to blow up Gangplank's flagship (the 'Dead Pool') so all of Bilgewater could witness the death of their Reaver King.
After surviving the explosion with Graves' help (Twisted Fate never learned how to swim despite growing up traveling the Serpentine River) both men settled their dispute and resolved to pick up their joint hustling. Graves having lost his shotgun Destiny, they are now headed to Piltover so he can get a new one.
Twisted Fate is still being hunted by Kalista even though Graves admitted it all started because he ignored the Card Master's advice to fold and still went all-in with the heist (she is trying to convince the Outlaw to 'give him to his hate' considering that Graves, even though he promised to listen to Twisted Fate in the future, will 'collect his due' if he is abandoned again)