SPOILER ALERT Scarlett Johansson escapes from the Marvel universe and gets to play her own superhero in "Lucy." Unfortunately, the result is unintentionally cheesy and dumb. Directed by Luc Besson, "Lucy"...

  It’s 2031 and Earth’s sole survivors are struggling to maintain a social balance aboard Snowpiercer, a self-sustaining bullet train that must keep its engine running to keep its passengers alive....