MPAA Rating: PG-13/ Genre: Sci-Fi/ Stars: Dwayne Johnson, Naomie Harris, Malin Åkerman, Jake Lacy, Joe Manganiello, Jeffrey Dean Morgan, P. J. Byrne, Marley Shelton, Demetrius Grosse, Jack Quaid, Breanne Hill, Matt Gerald, Will Yun Lee, Urijah Faber/Runtime: 107 minutes Once upon a time, there was an era in the long…