Yoshi and his wife Aiko are Japanese-Americans living in Los Angeles. They used to love to walk in the woods together, but now Aiko suffers from Alzheimer's Disease and Yoshi is reduced to life as a full-time caretaker. His love for Aiko is not enough, though, to make him an effective caretaker, and he comes into conflict with his son over the best way to deal with the increasingly difficult Aiko.