Mina was just an ordinary 18 year old dancer, who just got her own dance crew and just started her new life as the main dancer and "y dangerous maknae" of 5IVE. 5IVE has under the last year grew more popular for their great covers of most JYP productions. Suddenly Mina starts falling more often and starts walking wierdly, stumbling everywhere. She also had a hard time grabbing her bag or other things. Eventually her best friend, Eri, reacts to the odd things, and forces her to visit a doctor. There, after a serious health check, she meets her worst nightmare ever. She's diagnosed with spinocerebellar degeneration - a terrible disease where the cerebellum of the brain gradually deteriorates to the point where the victim cannot walk, speak, write, or eat. A cruel disease, as it does not affect the mind in the least. Some humans with this disease survive 10 years just having bad balance. Some people pass away after 2 months, when the body dont have any energy to wake up anymore. How will Mina take care of the disease, will she meet her role model and the guy she looks up the most to and how will Eri support her?