Where else could someone look at a photograph and create a story of stepping into that picture like it was an airport gate? How does an adult get to indulge in the fantasy of changing the world that came before? Only in the world of fiction.
If you could travel back in time, would you? Where would you go? Why? Who would you speak with? Why? What would you change? Are you prepared for the consequences of your actions? Are you sure?
What means do you have to make the changes? How would you protect your revisions?
What if your adjustments put your life at risk?
Who could you trust on this journey?
What if it was only you?