Hyun-moo decided to go on a diet and give up ramen but at the day, Hyunmoo is a ramen maniac. What's the special recipe for "Losing Weight" developed by Hyunmoo? Dongwan is invited to a housewarming party of Jukmagowu. He's chatting with friends he hasn't seen in a long time. What's embarrassed Dongwan? To replace the lights that have been turned off all over the house. Seok-jeong asked Jung-wan for help. Meanwhile, Seokjeong's workroom lights are installed by Jungwan. Will Jungwan be able to overcome a crisis during the light bulb replacements?!