概要：
Apassionate26-yearoldBMXdirtjumper,PhineasCooper,getsthechanceofalifetimetocompeteattheregionalleveltoqualifyfornationals.Buthispursuitoftriumphsourswithacrashthatknockshimoutofcommission.Determinedtogetbackontrackforthenextmajorcompetition,heundergoesphysicaltherapyforacouplemonths.Inthemeantime,heisorderedbycourttocompletecommunityserviceformanyunpaidcitationsforrecklessstreetriding.Heisforcedtovolunteeratalocalyouthcenterforat-riskteenageboys,andmeetsJordinRiley,abeautifulhumanitarian.Toimpressher,PhindecidestosignupformentorshipandhandpicksoneofthetoughestboysnamedBlueEspinosa,a14-yearoldwhosemotherisaheroinaddict,andwhosefatherwasgunneddown.AsPhintakesBlueunderhiswings,heandhisfriendsleadhimonadventuresofridingdirttrails,bigjumpsandcityscapes..
