One of the most dramatic of sports stories gets the expert film it deserves in “The Russian Five,” a documentary that is moving in ways you won’t see coming. The sport is professional ice hockey, specifically the saga of the Detroit Red Wings, who in the 1990s changed both their professional trajectory and the way the game is played in the National Hockey League by boldly adding Russian players to the mix. The intensely human situations revealed by director Joshua Riehl will captivate you even if you don’t know a puck from a ping-pong ball. The key to “Russian Five’s”...