Hae Yoon and Dong Bi get nervous about approaching thirty and give their long-term boyfriends ultimatums for marriage.

Dong Bi finds herself unable to get over Ki Joon. Hae Yoon and Jung Hoon's mothers run a background check on each other.

Hye Yun's family is late to a meal with their future in-laws. Hye Jin wants to split up with Do Hyun.

Decisions about where to have Hae Yoon and Jung Hoon's wedding causes turmoil amongst the families, and Hae Jin discovers Do Hyun has been cheating.

Deul Ja confronts Do Hyun about his affair, and Hae Yoon and Jung Hoon continue to be burdened by popular wedding customs that others are pressing on them.

Hae Yoon is becoming closer to Jung Hoon's family however a big fight with her and her own mother causes grave consequences.