In a hardcore gym where sugar is strictly forbidden, Tiantian, a girl at the front desk, secretly starts an underground bakery business to meet her performance targets. She cleverly disguises desserts in protein powder tubs and yoga blocks, rescuing trainers and members suffering under harsh diets. However, with the strict rules imposed by the ever-patrolling boss, Mr. Lei, Tiantian's supply plans repeatedly risk being exposed on the spot. In this heart-pounding battle of wits, she must rely on her cleverness to avoid discovery while trying to completely overturn the gym's traditional rules with healthy desserts.