12-year-old Luna Tanaka, lives with her grandfather in an old clock shop, ever since her parents disappeared. But when she finds an old dusty clock in the basement, everything changes. She falls through a clock into the realm yōkai no bēru, where she meets new and long lost friends, where the threads of reality are tangled, and everything is at stake.
Meanwhile, Yasu Sato is working at her dads vet office. She is very exploratory, but quiet. The only ones she really talks to are the patients. But one day, they speak back. Her life is turned upside down, as she gets transported to the same realm, with her dog Acorn, and her cat Lia.
When the two finally meet they must work together. But is it all worth it? As secrets unravel, the two must find the true meaning of friendship, and home.