In the 23rd century, humans already have the technology to embed Doraemon's fourth-dimensional pocket on the human body, but our heroine accidentally fell asleep in the time machine and traveled through time inexplicably. The heroine just wanted to make some money and live a good life, and then find someone who could take her back. Unexpectedly, not only did she lose her unjust first love, but she was also eaten to death by her younger brother who was pretending to be a pig and eating the tiger, and she was even involved in a series of troubles...