A young woman (Y/N) has a brief but memorable encounter with a calm, mysterious motorcycle rider, Gù Chéngyuān, when he warns her about safety while her hand is hanging out of a taxi window. Their interaction is short, but his steady and unreadable presence leaves an impression on her. The next day, she unexpectedly meets him again at a motorcycle gathering her brother brings her to. Gù Chéngyuān turns out to be a well-known rider in that scene. Their conversation is slightly tense but charged with familiarity, as he lightly teases her about being careful. When her brother introduces them properly, it becomes clear that this “stranger” is actually a respected figure in the local riding community.