Time Shifters — Chris Grine

When Luke investigates an eerie blue glow in the woods behind his house, he doesn't know what he'll find there. But a scientist, a robot Abraham Lincoln riding a friendly dinosaur, and a sassy ghost were the last things he could have imagined stumbling upon. Now as Luke and his new companions are pursued by a bickering trio of bumbling henchmen who are after the strange device locked to his arm, he's forced on a crazy, headlong adventure in a parallel dimension! Will he find his courage in time to save the day and get home or will he be trapped in a weird alternate reality forever?