On the eve of the Spring Festival in 2026, the Year of the Fire Horse, Zhou Mingzhe, an ordinary librarian, transmigrates to a Victorian-style alternate world called Cavendish. Steam and the supernatural coexist here, where gentlemen walk alongside the uncanny. He hopes to enjoy a leisurely life in this strange new world, but unexpectedly gets caught up in a series of bizarre murders. On nights of the full moon, the victims all turn into bronze statues, clutching scraps of paper inscribed with Chinese characters: “A lucky Year of the Horse, the hour has come.”
Even stranger, Zhou Mingzhe discovers that this world's secret-keeping organization seems to be closely connected to certain legends from Earth. And the commemorative Year of the Horse coin he brought with him when he transmigrated turns into a talking bronze foal at midnight, always popping up with absurdly unhelpful “assistance” whenever his deductions hit a dead end.
When a transmigrator becomes a detective and the Eastern zodiac meets Western mysticism, an adventure blending mystery, farce, and an eerie atmosphere begins in earnest at the stroke of midnight.