Into the unexpected

Two twins are sent by their parents to spend the winter with their uncle and aunt. Despite being a rich businessman, uncle Karlsson refused to let the children, Claire and Alfie, stay at the luxurious mansion he lives in and instead lets them stay with aunt Vanessa in a small, all wooden cabin he bought. Karlsson and Vanessa are always busy and cannot afford to spend time with the two. But who knew that what Alfie and Claire would discover would change everything...?

[Extra]

I am not English and I deeply apologize for any mistakes. As well this is an original creation, inspired by Gravity Falls which was made by Alex Hirsch.