Addicted tells the story of a married couple, Eun-su and Ho-jin and the husbands younger brother, Dae-jin. Life is seemingly perfect and all three live together in harmony until tragedy strikes one fateful day. Two separate car accidents put both brothers into a coma; Dae-jin during a car race and Ho-jin on his way to the racing curcuit. Only the younger brother wakes and Eun-su is left without he...r husband. However events take a strange twist as Dae-jin demonstrates more and more of Ho-jin's behaviour leaving Eun-su questioning if her husband's soul is trapped in the body of her brother-in-law.