When Lin's father falls seriously ill, Doctor Walker arrives urgently to treat him with special pills that promise a recovery. However, a family member accuses the doctor of endangering Lin's grandfather's life by possibly shortening it, leading to a heated confrontation where the doctor is insulted and ordered to leave. Despite the hostility, Lin's grandfather regains consciousness, showing signs of improvement. The episode ends with Lin anxiously checking on his grandfather's condition, leaving the doctor's controversial treatment and the family's distrust unresolved.