"你在哪儿" (Nǐ zài nǎr) translates to "Where are you?" in English. Without a specific context or reference to a particular movie, show, book, or song, it's challenging to provide a detailed plot summary. However, if you're referring to a specific piece of media, please provide more details so I can assist you better.
If you're asking about a general scenario where someone is asking, "Where are you?" the context could vary widely. For example, it could be a scene in a romantic comedy where one partner is looking for the other, a tense moment in a thriller where a character is searching for someone in danger, or a simple conversation in a family drama.
If you have a specific work in mind, please let me know, and I'll do my best to provide an accurate plot summary or description.