After their debut in 1998, "Fin.K.L" was actively promoting for 4 years. They then took a 17-year hiatus without disbanding, during which much had changed. Three members got married and live separately in Seoul, Jeju, and the US, pursuing careers as a musician and actress respectively. It wasn't easy to reunite with a common purpose. Now, under the name "Fin.K.L", all 4 members will try to unite their wills. They will drive a special "camping van", travel across the country, experience the leisure they couldn't enjoy during their active days and the beauty they haven't seen, embarking on various experiences and challenges. And then, on the last day of the trip! The four, who have lived their lives diligently apart for a long time, will share their distanced hearts through the journey and decide whether to take the stage for their 21st anniversary. Will "Fin.K.L" be able to gather the courage and will to stand on stage again at the end of this journey?