Hye Ji and Ha Eun have been best friends since secondary school and they've been through so much together but one of them doesn't like to share their story and decides to keep it a secret for the sake of the friendship and that person does not want anyone knowing. Hey Ji is a cool person. She doesn't let anyone get in her way and would rather be alone with no friends but when Ha Eun eventually becomes friends with her, everything starts to change. Hye Ji will start to come out of her shell and decides to have one friend that she can trust and rely on. After they've left secondary school, everything adapts and they start their journey at Seoyeon University. Will they be able to keep their friendship? Will both of them struggle to cope University?