In "Youth Periplous Season 4", members of the "IF Club" embark on a pleasant spring journey. This season's program embraces the theme IF—without a predetermined script—in order to give the members' authentic reactions during the trip, and to challenge a new journey full of unknown possibilities. Season 4 will travel around different regions and explore their beautiful scenery, delicious foods, and unique cultural heritage. Through this, members and viewers will be able to grasp the core of the city/region's culture and feel inspired to explore their vast world.