No more F4, now it's H4 generation! The H stands for 'Halbae,' a cute way of saying Halabeoji (grandpa) in Korean. H1 leader Lee Soon-jae, H2 cutie Shin-gu, H3 mood maker Park Geun-hyung, and H4 whiny youngest Baek Il-sub! With the average age of 76 years old, these grandpas go on a backpacking trip for the first time in 50 years! The beginning of the world's most grown-up, 10 days 9 nights trip! As Na PD tricks Lee Seo-jin into this trip, the first episode takes place in Paris with the four unpredictable, charming Halbaes and Porter Seo-jin!
'황혼의 배낭여행'을 콘셉트로 한 배낭여행을 떠나 펼쳐지는 기상천외한 이야기!