17-Year-old Lin Xiaoman dug out a brass pocket watch from his grandma's old desk. Late at night, the pocket watch burst into blue light. A black hole in space and time opened up on the desk, and a hand with strange patterns stretched out from it. The intrusion of his friend Xia Zhi temporarily repelled the danger, but pocket watch patterns appeared on Lin Xiaoman's wrist. What kind of secrets of time and space were hidden in the "Follow the vines" note left by his grandma?