Ling Yan, a professor of medicine, finally met Shen Du, who was a tarot master during his lifetime, after an operation failed. He fell into a cycle. He once studied reports related to the Möbius strip in his medical reports, so he searched for a way to end everything in cycles. Finally, he found that Shen Du, the deceased, was the key to breaking the situation. Can Ling Yan, a professor of medicine who has never believed in metaphysics, and Shen Du, a master of metaphysics, end everything side by side?
Concept: Two male protagonists, two redemptions