Repeated memories

I want to ask how much I know about my family, the closest person in the desolate world, through movies.
Jong in studies in Uzbekistan and works as a part-time carer. Same as always, he spoon-feeds patients, cleans rooms and also toilet. One day, he gets a call from his friend, Ha-yeong. “I have a job for you. There an one old man who is blind and deaf. He is just waiting for his dying day. Your job is acting like his son and eating dinner with him. It’s for 100 dollars for a day. I’ll send you some details.”
Jong-in decides to eat dinner with Ra-him as his fake-son.