Brothers Ethan and Jake travel to Serengeti National Park in search of adventure and a break from their daily routines by volunteering at a wildlife preserve. There, they meet sisters Sarah and Emily, fellow volunteers with whom they form an instant bond. Hoping to impress the girls, the brothers suggest an unauthorized nighttime jeep tour to observe nocturnal animals-despite strict warnings. When their vehicle breaks down deep in lion territory and communication fails, the group must decide whether to stay with the jeep and await uncertain rescue or risk crossing predator-filled terrain in a desperate bid for help.