Soleil d'hiver

Eight-year-old Yu-xin lives a colorful yet lonely life by the sea. Convinced her hiccups are a whale's gulps for air, she sends out calls for companions. Through a school vent, she finds one—a silent girl. They share adventures until Yu-xin realizes her friend is hiding something.

In a post-apocalyptic world, Hao survives in a city under the repressive military, chasing ancient inhabitants who have become monstrous. Hao's girlfriend, Ying, is one of them. Hao tries to protect her despite the danger she represents for him.