The life of Su Wan, an ordinary librarian, ended with a box of mysterious ancient books. When the ancient book with an indigo cover turned into silver fluid in the palm of her hand, a cold mechanical voice announced that she had become the host of the "substitute system" - from then on, she must perfectly play the target person within 72 hours, from a wealthy daughter to a doomsday doctor, from a top movie queen to an interstellar pirate. Every mission is a gamble of life and death. If you complete the mission, you can obtain super talents. If you fail, you will face permanent brain damage.
Intention: When lies become a weapon of survival, how should we place our sincerity? This escape between 300 identities and 12 parallel worlds will eventually come to an end at the core of the Lord God's realm - using the loopholes of fireworks blooming around the world to exchange for an ordinary embrace without a system.