Fairy Hanlu reincarnated and opened an ice cream shop in the corner of the city that allows people to "go back in time". Every bite is the most important moment in someone's life. Until a man appears who only wants to go back to yesterday - he lost the love of his life, but rejected all the better memories. Lu Hanlu didn't know that this seemingly ordinary man would remind her of why she came to earth and the promise she had forgotten for thousands of years.
