Love is eternal. Hospital director Ahn Bin suffers upon learning his wife has an incurable illness. Nurse Soon Ok, who sympathizes with him, eventually falls deeply in love with him. However, Ahn Bin does not accept her love, and his wife eventually dies. Soon Ok marries her ex-lover Heo Young and tries to live a diligent life raising Seop, Heo Young's child. But Heo Young becomes a wreck due to his reckless lifestyle and dies away from home. When her mother-in-law also dies from a contagious disease, Soon Ok returns to Dr. Ahn's side at the persuasion of Young Ok and In Won.