Once you have been in a forest during the winter time, you can't forget what you see there and will always wish to return. Last year it was the first time in your life when you visited a forest after it snowed. The image of that immaculate nature remained in your memory and want to see it once again. So this year when it started snowing, your first thought was to go and explore the forest. And so you did, all by yourself.
But all that snow can be confusing and you kinda got lost in the forest. At a moment you found a house where you could take shelter, but you will have to find the key to open the door. It's getting dark quicker than you expect. Taking out your flashlight, you went at the back and saw a toolshed. It's open, too. So start exploring and discover the key. Good luck and have fun!