The team from the Spirits and Such Consultation Office, including Arataka Reigen, Shigeo 'Mob' Kageyama, Ritsu Kageyama, Katsuya Serizawa, and the spirit Ekubo, embark on a luxurious hot spring getaway to Zebra Prefecture. Their trip, fully funded by the Ibogami Hot Springs owner, comes with a special task for Reigen—to probe reports of supernatural occurrences. However, as they journey by train to their destination, Reigen and Serizawa doze off only to awaken in a mysterious spectral realm! Stranded in this eerie dimension, they must unravel the mystery of their unexpected transit to ensure they can still relish their well-deserved respite.