Tang He refused to wake up due to psychological trauma. In order to wake him up, his family created an intelligent robot that could enter Tang He's subconscious. After repeated experiments, Tang He finally woke up from his deep sleep.
Shisen is a robot that exists for Tang He, and his mission is to bring Tang He back to reality. After repeated experiments failed, Shi Sen finally understood emotions, and finally moved Tang He and returned to reality together.
Intention: Even if you don't want to wake up from your deep sleep, someone still loves you silently.