A husband and wife go sailing across the ocean, leaving their two children at home. The seemingly careless life is disturbed by a sense of fear when they lose touch with their parents. The boat capsized and their dog went missing. The parents return home only to find out that their son needs a kidney transplant and, as it turns out, the husband is not the boy’s biological father. At the height of the crisis, we take our leave of the family and see a deserted island where the dog fights for survival. One day, a ship appears on the horizon and the dog returns home. But where is home actually?