The Haunted House: The Secret of the Cave(2018)

Hari and Duri are a sister and brother living in the Shinbi apartment complex, which is more than a hundred years old. Living with them is a 102-year-old goblin named Shinbi. One day, they find a secret cave hidden in the woods. Swept up by the power of the cave, they’re taken 22 years into the past, to 1996.