Be it human or ghost, useless means loveless.

Overview

After Nat tragically dies from dust pollution, March is consumed by grief. But his daily life is turned upside down when he discovers his wife’s spirit has been reincarnated in a vacuum cleaner. As absurd as it seems, their bond is rekindled, stronger than ever. But it hardly to everyone’s liking. His family, still haunted by the accidental death of a factory worker, reject this supernatural relationship. To prove their love, Nat offers to clean the factory to prove herself a useful ghost, even if that means doing away with some lost souls…