After Geun-hyung leaves, Soon-jae and Il-sub are saddened. Fortunately, they visit Lucerne on their next stop and are comforted by its beautiful scenery. However, Soon-jae makes one bold suggestion that brings about both tears and smiles.
The grandpas begin their trip in Switzerland. However, as soon as Seo-jin and H4 arrive in Bern, Seo-jin has a mental breakdown. Also, during their second day in Switzerland, they are faced with danger once again, this time from nature.
With travel expenses running out, the grandpas play a nerve-wrecking match of GoStop against the staff team in order to earn money. Also, as it becomes the 6th day of the trip, Seo-jin and H4 say farewell and start anew in Switzerland.
Lee Seo-jin and H4 begin their trip in Strasbourg, visiting the Notre-Dame Cathedral. As Seo-jin continues his role as a porter and guide, the grandpas are in their best mood thanks to the relaxing and romantic atmosphere.
Seo-jin and H4 go to the Palace of Versailles, where Baek Il-sub shows no interest and Geun-hyung reveals a new side of himself. Then, on the crew's next destination, they are faced with a tragedy that puts Seo-jin into a state of urgency.