All the Butlers (2017)
The cast members spend two days and one night together with reputable figures of various fields or professions, known as Masters, and get to know about the lives of the Masters, in the hopes of gaining knowledge and wisdom. There are also 1-day Masters in the show, which the cast would instead spend a day together with.
All the Butlers (also known as 'Master in the House') is a South Korean television program that airs on SBS weekly on Sundays at 18:25 (KST) from December 31, 2017. This marked the first fixed variety show for Lee Seung-gi since his discharge from the army, and for Lee Sang-yoon this was the first fixed variety show of his career.