Kuk Su-ran

When a legendary Go master loses his title to a one-time friend and protégé, he sets out to reclaim it in a high-stakes battle of wits and skill.

Pil-ju, an Alzheimer's patient in his 80s, who lost all his family during the Japanese colonial era, and devotes his lifelong revenge before his memories disappear, and a young man in his 20s who helps him.