Lost in the Stars is a Chinese Hitchcockian-style mystery crime thriller that grips the audience and keeps them guessing with endless twists and turns. It's pulpy, melodramatic entertainment that burns brightest in the moment, assaulting the audience with questions but never providing enough time or the breathing room to solve them.
While celebrating their first anniversary at a Thai island resort, He Fei discovers his wife Muzi has mysteriously gone missing. Unable to file a missing persons case with the police and his visa about to expire, He Fei wakes up to find an unknown woman claiming to be his wife and that all the photographs on his phone have been replaced.
Desperate for help, He Fei hires Chen, a renowned hotshot lawyer, to disprove the mystery woman's identity and find the real Muzi.
Directors Rui Cui and Xiang Liu hook the audience from the beginning and keep the plot moving like a freight train. Yilong Zhu, Ni Ni, and Janice Man tune their performances to serve the mystery like a cog in the machine, finding the sweet spot between who their character appears to be and revealed to be. Little inconsistencies spotted are actually all paid off later in a fun way.
The final reveal... is so ridiculous that it's technically a cheat. I notably laughed out loud as the film blatantly switches genres to engineer an unguessable reveal.
It's the equivalent of revealing Darth Vader is a woman so the audience has no chance of guessing he's Luke Skywalker's father, if that makes sense.
By that point, the fun had already been had. I already cared and can't take it back. The journey was in guessing what was happening at the moment, less in the reveal itself.
The best mysteries place the answer in plain sight and deceptively steer the audience from seeing the obvious the entire time. Lost in the Stars falls short of this; its mystery is ultimately not sophisticated enough to warrant a rewatch. The mood, intrigue, and soap opera melodrama of it all still make it an entertaining one-time watch.