She's dying—Artemis Charelle Brioso, after she fought for her life for about a year she thought she's already fine but that was just what she thought. Because a year after her surgery her illness came back and it's worse than before. She was alone and hopeless thinking she can't survive this sickness this time because they don't have enough money for medication and she doesn't have inspiration to continue her life.
Her life… her life was a mess. She knew that even if she died today, no one would cry in agony for her nor miss her badly. She knew that she could leave the world peacefully without thinking about the people she left because no one cared for her. While she's at the peak of death, she realizes something. She didn't enjoy her life, unlike the other teenagers because she's too focused on her studies since her family was strict. That's why before she'll leave, she decided to do the things she hasn't done. She wrote in a small notebook as a checklist.
She wanted to feel how it felt to feel alive since she doesn't know how to break some rule because she belongs to a strict family.
But she accidentally met Angelo Jo Castielle—he helps Artemis to explore the world within one hundred days. She found a reason to fight for her life again, he becomes her motivation to live. She wanted to live to be with him. However, does fate will favor her this time?