Du Yuhan and her brother depended on each other for life. People of the opposite sex who had been close to her since childhood would die accidentally. She was isolated by her classmates and developed a withdrawn and eccentric character. In an accident, she met the future intelligent robot K-03 and began a fast-travel adventure. Du Yuhan: If you don't complain, will I die? K-03: The robot will not die, it will only run out of power and shut down. This is common sense. Du Yuhan: ... K-03: And you don't even have common sense, yet you still don't hold my thigh tightly!