Charlie and Nadia's (Oliver Davis and Aften Opal's) parents have just married, making these two teens stepsiblings overnight. What their parents don't know, however, is that Charlie and Nadia used to go out. They've kept their past relationship a secret, not wanting their old flame to extinguish their parents' new one... But after moving in together, they can't help but feel the old pull of their past attraction, luring them together- try as they might to keep these thoughts at bay.