What if a sweaty night at your local sauna turned into a literal swap of lives? In this delightfully absurd Taiwanese BL special, a harried young employee (Edward Chen) is on the verge of quitting his soul-crushing job under a handsome but demanding boss (Patrick Lee). After a chance supernatural encounter in a mysterious sauna, the two wake up to discover they have swapped bodies. Cue a hilarious, chaotic scramble to navigate each other's lives—from impossible deadlines to awkward romantic misunderstandings—while trying to break the bizarre curse. But as they stumble through each other's shoes (and skin), the forced proximity sparks an unexpected, genuine connection. Blending laugh-out-loud comedy, gentle supernatural twists, and a surprisingly tender romance, *Mermaid Sauna: Alternative Ending* offers a complete, standalone story that gives fans an alternate, more romantic conclusion to the original series. With a fun ensemble of side characters and plenty of sauna-related shenanigans, it's a quirky, heartwarming treat that proves love can happen even in the steamiest of places.