Kwang Sook, a post office employee, has finally left her single life behind and is now in a blossoming romance with Jang Soo, the owner of Eagle Brewery; as their wedding approaches, she enjoys a joyful time with Jang Soo's four younger brothers.

Happily married, Kwang-sook and Jang-soo enjoy their blissful honeymoon; she receives a call informing her that her wedding dress was returned damaged; upon discovering that Dong-seok is responsible, she confronts him.

After Jang-soo's funeral, his grieving brothers demand that Kwang-sook leave the brewery; Dong-seok ends up straining his back by an unexpected encounter with Kwang-sook at the columbarium.

Dong-seok unintentionally hurts Kwang-sook with a remark when she returns to the hotel to give him medication for his backache; wholesalers who made advance payments learn of Jang-soo's death and turn up at Eagle Brewery, demanding repayment.

After taking over Eagle Brewery, Kwang-sook develops a new drink called Jang-Kwang Makgeolli; Dong-seok, who has long struggled with insomnia, unexpectedly sleeps soundly after drinking it.

Kwang-sook invites her brothers-in-law to dinner to celebrate the release of Jang-Kwang Makgeolli, but tensions rise as they start arguing; Kwang-sook is invited to the dinner party.