Cho Hui-ja leaves behind a comfortable but lonely life in the Philippines for Korea, where her friends are preparing to attend a reunion.

Jang Nan-hui and Lee Yeong-won bicker over a decades-old grudge. Hui-ja is bothered by what her friends think about how her husband died.

At the police station, Yeong-won saves the day. Later, everyone gathers at a photographer's studio to have their portraits taken.

A horrible accident leaves Hui-ja and Moon Jeong-a shaken. The day after Park Wan brings them home, she realizes something is seriously wrong.

Oh Choong-nam feels her heart skip a beat as she helps Lee Seong-jae shop for a party at his house. Yeong-won reveals a painful secret to Nan-hui.

The brutal truth about Kim Sun-yeong's marriage overwhelms her parents. Choong-nam considers telling Nan-hui about what she saw Wan doing.

While grieving for her mother, Jeong-a becomes determined to live for herself. Wan chats with Seo Yeon-ha about the woman he's met.

An earnest request from Seong-jae triggers Choong-nam's anger. Jeong-a informs her friends about her intent to leave Seok-gyun.

Wan and Nan-hui tearfully confront their painful past. Finally able to go on his trip with Hui-ja, Seong-jae takes them down memory lane.

Seok-gyun remains oblivious as Jeong-a makes up her mind. Wan's impulse trip to see Yeon-ha leads to a frank conversation about unkept promises.

Seok-gyun convinces himself that Jeong-a will return in a few days. Choong-nam plots her revenge against those who take advantage of her.

Yeong-won agrees to meet an ex-husband. Starting to realize his wrongdoings through the past few decades, Seok-gyun calls Wan to tell her his story.

While fearfully awaiting news that could change her life, Nan-hui runs into her crush. Seong-jae worries about Hui-ja's worsening condition.

The friends search for a missing Hui-ja. A fearful Nan-hui finds company in Yeong-won and Wan as she processes the next steps after her diagnosis.

Before her surgery, Nan-hui pays a visit to her mother. Jeong-a and Hui-ja share a tender moment. Wan makes a call that breaks her heart.