Two Americans wind up in Dakar, Senegal, with bombs strapped to their chests. They have 10 hours before the device explodes, with a man’s voice in an earpiece directing their every move. From the get-go, Zerodoesn’t hold back. The new action thriller from writer/director Jean Luc Herbulot is smart, sharp, messy, action-packed, and occasionally exhausting. Still, it recalls some of the earlier zaniness of Guy Ritchie films, making it an immediate thrill ride.