Many years later, Pei Ran met Qi Yunyi on a blind date. Not long after they reunited, Qi Yunyi jumped into the river and died. Pei Ran thought that he jumped into the river because he was suffering from depression due to being hacked. She blamed herself, was sad, and was desperate. Why could she, a psychiatrist, not see his condition...
After Qi Yunyi's death, Pei Ran went to his house and found a bracelet falling on the ground. When she went to pick it up, she just grabbed the bracelet and returned to her high school days. Pei Ran saved Qi Yunyi's fate countless times. Later, she found out that his jumping into the river was not due to depression, but had something to do with Pei Ran. She was trying to protect Pei Ran...
In the end, Pei Ran successfully changed her destiny and caught the murderer, and she also got together with the person she loved when she was young.
Intention: Meet the light, chase the light, and become the light.