主人公山姆（克里斯·卡马克 Chris Carmack 饰）有着沉重的过去，一场大火让他的家庭支离破碎，妹妹珍妮（蕾切尔·敏纳 Rachel Miner 饰）也由于自己的失误葬生火海。成年后的山姆在偶然间发现自己拥有了能够穿越时空的超能力，他利用自己的能力回到了火灾现场，虽然救出了珍妮，但是本该逃生的父母却死于火灾。改变了过去后，山姆和珍妮相依为命，山姆结交了女友丽贝卡（Mia Serafino 饰），可是没多久，惨剧再次发生，丽贝卡死于一场谋杀，而山姆的朋友朗尼（Richard Thorne 饰）则被警方当做真凶逮捕判刑。丽贝卡的妹妹伊丽莎白（莎拉·哈贝尔 Sarah Habel 饰）觉得事有可疑，他拜托山姆穿越回丽贝卡被杀害的那一天，找出真凶。
一次次的穿越让时间线索变得面目全非，本该死的人活着，本该清白的人却背上的罪名，唯一不变的，是所有亲近他的女性都会惨遭杀害。随着真相的渐渐明朗，一个另山姆意想不到的身影出现在了本不属于他的时空中。

In "The Cutting Edge: Fire & Ice," Francia Raisa reprises her role as Alexandra "Alex" Delgado in film franchise, whose figure skating career came to an abrupt halt after her partner (on and off the ice) became injured. As their love affair cooled, a heart-broken Alex stopped competing and turned to teaching. Enter James Van Behr (Fehr), the smoldering bad boy of speed skating, who has had fiery Alex in his sights as a skating partner ever since he was banned from speed skating. There aren't many girls who say no to James Alex may well be the first. However, James pushes her buttons, challenging her like no one else and her fighting spirit returns. She agrees to be his partner and they begin a grueling practice regimen fueled (and occasionally derailed) by their own tempestuous relationship which heats up as they get closer to competition. But will their passion destroy Alex's chance to bring home the gold again?

纽约长岛小镇绍索德 (Southold) 夜出异象，一架小型飞机坠毁于佩康尼克湾 (Peconic Bay)。警长乔·埃文斯 (Jo Evans) 在事故现场发现一名神秘小女孩，她好心收留并为其取名派珀 (Piper)，殊不知自己已被卷入一场超乎想象的阴谋。