Photographer Su Wan encounters a yellow weasel in a traditional Chinese jacket blocking her path at the Qianshan Scenic Area, demanding that she grant it a human form. Fed up with everyone pressuring her to get married, she blurts out, “You look like the perfect husband fate has chosen for me!” From then on, the northeastern folk legend of a weasel gaining human form turns her kitchen upside down.
Her unwilling immortal-beast husband, Mo Xuan, has a face straight out of a video game and is learning to use a gas stove. He whips his nine tails around while studying Chinese cuisine, but during the hundred-day countdown, a deadly secret comes to light: if he can't make her truly fall in love with him, he won't just revert to his original form. He'll also cause her soul to be scattered.
When the marriage curse becomes a death warrant and ambushes from the spirit world close in, Su Wan glimpses the truth of a hundred lifetimes of reincarnation amid a heavenly tribulation. The character for “joy” formed by burning maple leaves that night was actually a love letter spanning a thousand years, and every dish ruined in the iron pot was a love poem the immortals wrote for the mortal world.