Wife, Not My Wife (2011)

Wikanda is a rich woman with a cheating husband named Apiwat. Kaewta is married to Wanchai, they have a wonderful marriage. Kaewta works for Wikanda at her spa. After a car accident where Wikanda is chasing down her husband’s mistress and Kaewta is in the car with her, they lose consciousness and wake up to discover they have swapped bodies. Seeing that Wikanda is not in her right mind, Apiwat takes her home and drugs her with various psychotic pills. He wants her inheritance and this is his best chance to steal it.