Lin Yu, an ordinary office worker, unexpectedly acquires a sign-in System. With its help, he signs in at locations throughout the city, gaining enormous wealth, top-tier skills, and wondrous treasures. From then on, he turns his life around, fights back against his bullies, takes on the underworld, and even finds true love. See how he uses the sign-in System to become an urban legend and uncover the mystery behind it!
