Michael Jai White stars in Ben Ramsey film

On the eve of Sundance, Sony Pictures Worldwide Acquisitions Group has acquired all North American rights for the underground fighting drama “Blood and Bone.”

Story centers on an ex-con (Michael Jai White) who takes the underground fighting world by storm in his quest to fulfill a promise to a dead friend. Michael Andrews penned the screenplay.

Ben Ramsey directed the pic. Eamonn Walker, Julian Sands, Nona Gay and Kimbo Slice round out the cast.

Michael Mailer, Nick Simunek and Matt Binns are the pic’s producers.

Follow @Variety on Twitter for breaking news, reviews and more