Imagine that you decided as a child that you wanted to talk to yourself as an adult... What do you mean that you did?
Yes, I know. We all did.
And as adults, we really wish we could nip back to deliver a few words of advice (and the odd stern lecture), which would inevitably end up turning us into totally different people. Then we might not go back and have the chat. Which would cause a paradox and the end of time and space.
But back to the plot. Imagine that you not only wished to talk to your adult self, but fetched a camcorder and recorded your side of said conversation.
Then, twenty years later, hunting through a drawer of old VHS videos, you found that video. That's precisely what happened to Comédie de Caen film-maker Jeremiah McDonald and this is the result.