In a small village in the middle of the forest, there was a small family. One night when the youngest of two twin sisters named Ana finished having a pee and was about to go back to sleep, she found that her parents were not in their beds, and suddenly from the direction of Ana's room a large wall appeared that moved and led Ana to re-enter the bathroom, but there she found a duct that suddenly appeared from above her bathroom which she inevitably had to enter in order to survive. This is where Ana's strange adventure will begin, a mysterious duct that will take Ana to a world out of place, with many questions about what world she is actually in, where she will end up, where her family is, and whether this is reality or a mere dream? Only "they" will know.