Lin Dan has been bound with a supporting system to do auxiliary tasks to maintain the plot in countless small worlds. To put it bluntly, she is a female supporting role or the expendable, and uses her humble self to fulfill the greatness of others.
Being confused, persistent, crazy, unable to love, unable to gain, Lin Dan has experienced too much failure and pain. When she fully understands and decides to unbind the supporting system and to return to the original world, she is hacked into the 3,000 worlds on the way back to continue her struggle.
When she loses her memory, Lin Dan is no longer confused, so she decides to follow her own way, and discovers her own law finally--only when you love yourself seriously can you get the love of others, and as long as you live out yourself, no matter how insignificant it is, it will come to a day you become the leading role. If you are in full bloom, butterflies will come to you by themselves.