Two different stories in one!

Unknown: A young swimmer believes in mysterious and unknown creatures that lurk beyond common sense. Her friend suggests a vacation trip to Micronesia, where she takes the opportunity to photograph a legendary sea creature that torments the island's natives.

Uncertain: A Chinese teenager lives in a coffin apartment in Hong Kong, where he and his mother share the same narrow bed. Under extreme conditions, his mother can't cope, leaving her son alone with a smartphone and a dream: to make a living photographing legendary creatures.