Sienna Cross, 26, former legendary F1 Grid Girl and current top-tier motorsport brand ambassador. Raised in the Ferrari garage, daughter of a legendary Ferrari race engineer. She grew up surrounded by engine oil, tire smoke and telemetry data. Her understanding of vehicle mechanics and track logic surpasses most professional drivers. She is dating the defending F1 World Champion — her late father’s most proud protégé. He loves her, trusts her, and sees her as his steady harbor amid the high-pressure championship battle. But Sienna carries a fatal ticking secret: she is pregnant. The child is not her boyfriend’s. The father is his greatest rival, the opposing multiple-time World Champion. She chooses to keep the baby. She walks the fine line between the two competing champions, perfectly hiding her pregnancy and manipulating the delicate balance of their rivalry. She has silently scheduled the explosion of this truth — destined to detonate publicly on the podium of the season’s final race, destroying everything in front of the entire motorsport world.