Mother in Paw (2020)

"Be careful when wishing your mother-in-law was dead. She might come back to haunt you--as a dog." Maria, mother of the Pitkänen family, brings home a small stray dog she found on the street. The rest of the family immediately falls in love with the dog, decide to keep him, and name him Paw. But to her horror, Maria soon realizes that her recently-deceased mother-in-law Anna has been reincarnated in Paw's body, and she is the only person who realizes--the only one who can see and hear her dead mother-in-law. The former adversaries must now work together to solve the family's problems, while their mutual conflict turns the family's everyday life into a flurry of crazy mishaps. Even death isn't necessarily enough to stop the holy war between mother-in-law and daughter-in-law.