Cha Seung-won and Yoo Hae-jin reunite to run a travel lodge in Europe! The two show their chemistry as they serve warm meals and memories to passing Korean travelers.

Seven well-known personalities, all with differing faiths and beliefs, put on backpacks and walking boots and, on foot and by road, set out to cover sections of the Sultans Trail - a modern-day, 2,200km pilgrimage across Eastern Europe, which starts in Vienna and ends in the historic city of Istanbul. Journalist Adrian Chiles, former politician Edwina Currie, Olympian Fatima Whitbread, comedian Dom Joly, actor Pauline McLynn, broadcaster Mim Shaikh and television presenter Amar Latif live as modern-day pilgrims, staying in basic hotels and often sleeping in shared rooms.

In the 14th century, a young merchant's daughter from southern Germany sets off on the adventurous Way of St. James to faraway Santiago de Compostela to fulfill her father's last wishes and bring his heart there. Disguised as a man, the pilgrim is hunted by pursuers set on her by her conniving brother.

In emblematic places around the world, Frédéric Lenoir, philosopher, sociologist and writer, goes to meet those who experience a spiritual quest, both religious and secular. A pilgrimage that mixes the voices of anonymous witnesses and personalities such as the Buddhist monk Matthieu Ricard, the apneist Guillaume Néry and the astrophysicist Hubert Reeves.