When a mild-mannered Uber driver named Stu picks up a passenger who turns out to be a cop hot on the trail of a brutal killer, he's thrust into a harrowing ordeal where he desperately tries to hold onto his wits, his life, and his five-star rating. Kumail Nanjiani and Dave Bautista lead this action comedy that also stars Iko Uwais, Betty Gilpin, and Karen Gillan.