Big conglomerate president Feng Teng has a younger sister, with a very rare blood type, who needs a transfusion. He finds an employee at his company named Xue Shan Shan and asks her for a blood donation. Afterwards, brother and sister are rather indebted to Shan Shan, but rather than using Feng Teng's typical method of paying her off, his sister suggests sending her nutritious packed lunches so Shan Shan can recover
