A family discovers a mysterious door in their house that has appeared in one of the children's bedrooms. They try to open it with three different keys, which were voted on by their YouTube followers. After trying the first two keys, they successfully open the door with the third key, "D". Behind the door, they find a snow-covered winter wonderland, complete with snowflakes, trees, and a cabin. They explore the area, have a snowball fight, and eventually discover a cabin with a sign that reads "Welcome to our cabin!" They also find a note from "Auntie" that suggests they have been brought to this place for a reason. The family is excited and confused by this unexpected turn of events, and they decide to explore further and figure out where they are and why they were brought there.
Here are the key facts extracted from the text:
1. The family found a secret door in their house.
2. The door was locked, and they had to find the right key to open it.
3. They received help from their viewers in deciding which key to try.
4. The top three key options were G, D, and N.
5. The family tried the keys one by one, with N not working.
6. They then tried key G, but it also didn't work.
7. Finally, they tried key D, which successfully opened the door.
8. Behind the door, they found a snowy environment.
9. The family was surprised and excited to find themselves in a winter wonderland.
10. They explored the area and found a cabin, where they met someone they knew.
11. They were unsure where they were or how they got there.
12. The secret door brought them to a place where their aunt was.