The similarities between “Tomorrow, When the War Began” and 1984’s “Red Dawn” are numerous, perhaps litigiously so, yet the differences in execution are extreme. Adapted from the 1993 novel by John Marsden, the teen guerrilla concept has been comprehensively sugared up to appeal to today’s younger audiences, turning the stomach-churning prospect of WWIII into a daffy high school melodrama where the characters are more preoccupied with love interests than world-changing events. Junky, with an emphasis on theme park stunt show heroics, “Tomorrow, When the War Began” is undeniably entertaining, but also profoundly silly, making “Red Dawn” look like a documentary by comparison. Read the rest at Blu-ray.com