I was walking at the sidewalk as I stare at the object I'm currently holding. I received a mail from an unknown sender today. 

As I was in deep thoughts, thinking about who the sender might be, a strong wind blew, causing the paper to fly off my grip.

Without thinking, I dashed to it's direction and tried to catch it. But because of my lack of height, I failed.

I sighed as the wind blew again, causing the paper to float higher.

I jumped and jumped with all my might. But still, it wasn't enough. Then suddenly, a hand got a hold of the letter.

And that's where our story started...