Justin Timberlake headlines Runner Runner as Richie Furst, a Princeton graduate student who needs to raise sixty grand to cover his tuition expenses; as a last resort, Richie decides to try his luck at an online gambling site – which doesn’t pan out, and leaves him without any chance of getting the necessary funding in time.
Thereafter, Ritchie fishes out the truth about the website – that it is run outside the United States’ jurisdiction – and decides to travel to Costa Rica, in hopes of finding the guy who swindled him and getting his money back. The mystery man turns out to be one Ivan Block (Ben Affleck), a tycoon who sees potential in Ritchie and has little trouble convincing the latter to work for him. However, it’s not long before Ritchie learns the sordid truth about his new benefactor – and finds himself stuck in a bad place, between the FBI and the dangerous Block.
Rounding out the supporting cast for Runner Runner are Anthony Mackie (Pain & Gain), Gemma Arterton (Hansel and Gretel: Witch Hunters), Oliver Cooper (The Hangover Part III) and Ben Schwartz (a.k.a. Jean-Ralphio on Parks and Recreation).