Xia Bei is a young doctor. After years of training, he has been allowed to start his own career. However, one thing is of great importance. He was told by his teacher that his Yang Qi had reached its peak and he must find a woman for Yin-Yang balance upon returning. What is the most embarrassing is that the first woman he meets happens to be his own step-mother.
"How can this thing be so big?
What would it feel like going inside?"
"Don't rush, soon won't feel uncomfortable... Auntie will relieve your fire!"