The single, middle-aged Mr. Zhang is an old immigrant who came to New York from Guangdong. He works at the seafood counter of a Chinatown supermarket to kill fish for customers. One Sunday at noon, his son, Xingzai, suddenly appears at this busy place. Normally, Xingzai lives at his uncle's house. On this day, he comes to the supermarket to make his Dad realize the promise of taking him to the East River for fishing. The lively child is just like an "intruder," breaking the daily routine of Mr. Zhang.