Infinite Challenge — Excessive Challenge and Master of Quiz

The cast solve quizzes and play games.  Initially the season was similar to season one and was known as Excessive Challenge (무리한 도전).

1. Baseball Challenge

Episode 1 · 29 Oct 2005 · 41 min

2. Horse Racing

Episode 2 · 5 Nov 2005 · 32 min

3. Firefighting Challenge: Part 1

Episode 3 · 12 Nov 2005 · 31 min

4. Firefighting Challenge: Part 2

Episode 4 · 19 Nov 2005 · 30 min

5. Sweeper Challenge

Episode 5 · 26 Nov 2005 · 45 min

6. Mental Calculation Challenge

Episode 6 · 10 Dec 2005 · 38 min

7. Infinite Challenge - Master of Quiz Airs

Episode 7 · 17 Dec 2005 · 50 min

8. Christmas Special

Episode 8 · 24 Dec 2005 · 48 min

9. A Year-End Special

Episode 9 · 31 Dec 2005 · 47 min

10. New Year's Day Special

Episode 10 · 7 Jan 2006 · 44 min

11. Master of Quiz

Episode 11 · 14 Jan 2006 · 45 min

12. Grandmother's House Special

Episode 12 · 21 Jan 2006 · 45 min

13. Lunar New Year Special - Who Do You Want to Keep as a Pet?

Episode 13 · 28 Jan 2006 · 50 min

14. Spring Special

Episode 14 · 4 Feb 2006 · 48 min

15. St. Valentine's Day Special

Episode 15 · 11 Feb 2006 · 48 min

16. School Graduation Special

Episode 16 · 18 Feb 2006 · 18 min

17. Lee Hyori Special: Part 1

Episode 17 · 25 Feb 2006 · 53 min

18. Lee Hyori Special: Part 2

Episode 18 · 4 Mar 2006 · 45 min

19. Beginning School Special

Episode 19 · 11 Mar 2006 · 55 min

20. 20th Episode Special

Episode 20 · 18 Mar 2006 · 46 min

21. Camping Special

Episode 21 · 25 Mar 2006 · 63 min

22. April Fools' Day Special

Episode 22 · 1 Apr 2006 · 55 min

23. Black Day Special

Episode 23 · 8 Apr 2006 · 56 min

24. New York Special

Episode 24 · 15 Apr 2006 · 55 min

25. China Special

Episode 25 · 22 Apr 2006 · 52 min

26. Yi Sun-sin Birthday Special / Lee Young-ae Special Event

Episode 26 · 29 Apr 2006 · 90 min