"Cold-hearted." That was the word Lee Eunyoung always used to describe her mother. But after her mother's passing, Eunyoung discovers a diary that shows her things she never even knew about the woman who raised her. Reading the entries allows Eunyoung to continue to feel her mother's presence and resolve their complicated relationship, but as the remaining pages dwindle and the visions that kept her company begin to fade, she's forced to face her new reality and say her final farewell.