Ever since their parents married, Becca has hated her stepbrother, Samir. For two years, she's blamed him for stealing her family, her home, and the life she lost. But when a brutal heatwave knocks out the AC, they’re trapped alone in a house that’s far too hot—and far too small. As Samir struggles to fix the broken air conditioner, lingering resentment gives way to lingering touches. The line between hate and desire begins to disappear, and Becca must face the one truth. She's spent years denying that the man she's forbidden to want may be the only one she can't resist.