Having made a spectacular botch of his first stab at adventure racing, Michael Light (Mark Wahlberg) wasn't giving up-and he recruited three partners to take on a daunting 435-mile course across the Dominican Republic. As his bullheadedness threatens to sink his chances again, the team found a rallying point and an improbable fifth in the scruffy street dog they named "Arthur." Fact-inspired sports rouser also stars Simu Liu, Ali Suliman, Nathalie Emmanuel, Juliet Rylance. 90 min. Widescreen; Soundtrack: English.