A librarian who lost everything to a wandering poet in her previous life and died with hatred was reborn on the first day he lived in the library. With the memory of the prophet in hand, she coldly set up a scheme to discredit her hypocritical boyfriend who plagiarized his poems, while dealing with this dangerous and gentle "old enemy" day and night. It was not until she opened the collection of poems he left behind that she discovered that the truth about her rebirth was actually hidden in his eyes that had protected her for three lives.