Delivery driver Leo receives a bizarre order: 'Jade Emperor,' 'Southern Heavenly Gate,' high pay. He enters the real Southern Heavenly Gate, becoming the sole delivery person for The Heavenly Court. Rewards like Peach Nectar and Lord Laozi's elixir dregs hold secrets. His 'scraps' affect the mortal world, alarming the Three Realms. Unaware, he continues until a life-saving incident reveals a century-long scheme. How will he survive between mortal and divine worlds?