It grabs you by the collar in the first ten minutes and never lets you settle back into your seat. Stephan is the most boring man alive, a shipbuilding company drone with his emotional shutters welded closed, and ChaO proposes marriage to him before he can even process what a mermaid princess is doing in his day. The comedy runs on that mismatch: her total, unembarrassed sincerity versus his instinct to apologize his way out of the room. Studio 4°C animates it with the kind of rubbery, physics-be-damned character acting most romance films would never risk, so ChaO's every mood swing warps the frame around her. There's no tragic backstory waiting to ambush you, no war between species to solve, just a guy slowly admitting he'd rather be loved loudly than left alone quietly. Annecy's jury saw it. Watch it and you'll get why.
Stephan lives a perfectly ordinary life, clocking in at his office job and asking nothing of the world. That routine shatters the moment Chao arrives on his doorstep with a marriage proposal and absolute conviction that he's the one she wants. She's a mermaid princess, luminous and earnest in ways that confuse him entirely, but refusing to take no for an answer. Suddenly sharing his apartment with someone so fearlessly genuine forces Stephan to confront how guarded he's become. Chao doesn't understand human hesitation or social caution. She loves without strategy, speaks without filter, and treats every ordinary moment like it matters. Her presence chips away at his carefully constructed walls, one sincere conversation at a time. What unfolds is a romance built on genuine connection rather than grand gestures. Stephan begins to thaw, learning that letting someone in doesn't require him to become someone different. Instead, he simply becomes more himself. The film captures how love sometimes arrives uninvited, insistent, and exactly when you need it most.