When your best friend drags you to a 5 Seconds of Summer concert, the last thing you expect is to get noticed—let alone invited backstage by Luke Hemmings. Suddenly, you’re thrown into a world of flashing lights, late-night chaos, and a band that feels larger than life. Everyone is welcoming… except Calum Hood. From the moment you meet, it’s tension, sarcasm, and clashing personalities. What starts as a bad first impression turns into an all-out rivalry that follows you for years—crossing paths backstage, on tour stops, and in moments neither of you can seem to avoid. He gets under your skin like no one else, and you give just as good as you get. But somewhere between the arguments, the stolen glances, and the things left unsaid, the line between hate and something much more complicated begins to blur. Because sometimes, the person you can’t stand is the one you can’t stay away from—and falling for your enemy might be the most dangerous encore of all.