剧情：
eeeZhangamiddleagedmanstrugglingwithadeadendjobasaninsurancesalesperson,onthevergeofdivorcewithhiswife,losingcustodyofherdaughterandontopofallthishehadtotakecareofhisfatherwho'ssufferingAlzheimer's.UnknowinglyZhangwasinvitedtojoinanundergroundfightinggameforfinancialpurposesbuteventuallyZhangbecomeshookedonthefightsandturnsprofessional.
