Life is like a rollercoaster ride, there are ups and downs. Hyuna and Jaeya are childhood best friend who decided to move out their family home and started living in their own while pursuing their studies. Their vibrant youth are full of joy because of their heartwarming personalities. Until one day, an unexpected circumstances will change their lives. It will creates domino effect turning Hyuna's life miserable. Her personality will drastically change turning her in a gloomy person who wanted to give up on everything. Despite those challenges Jaeya never leave her side; he stayed there to give her hope and help her surpass those obstacle. Time will passed by and they will gradually go with the flow of life but her destiny is cruel. For the second time around they will face a rollercoaster of emotions because another tragedy is knocking on their door.