Hak-su goes on three blind dates. Ji-goo, an origami YouTuber, constantly offers to drink, Ji-yeon, a yoga teacher, is too energetic, and So-hee, a scriptwriter, works even on a date. These women are unbearable drinkers...

Director Kang annoys So-hee again. And Ji-goo gets upset by the bad comment from a kid during her YouTube broadcast. Who consoles me when I am painful? A drink.

The three drinkers faced a crisis. Turning thirty, they can't drink as much as they used to. Since they can't give up drinking, they come up with all sorts of tricks.

After drunken So-hee kissing director Kang, it turns out that something was going on between director Kang and the intern So-hyun. And So-hyun who saw their kiss threats So-hee. Thus, So-hee has a drink with So-hyun to solve the misconception but gets annoyed by So-hyun's attitude. And they end up competing their limit.

Ji-goo and Ji-yeon who were drinking at the sushi restaurant ended up in the police station fighting. So-hee came to solve the problem after work, but it is not as easy as she thought. Will their friendship be okay?

So-hee, Ji-yeon, and Ji-goo used to have ordinary jobs. Each of them was a publishing company employee, a nutritionist, and a high school teacher. What were they like seven years ago?

Ji-yeon who ignored president Park's dubious intention was demoted to the dog factory. And So-hee who was with Ji-yeon was about to be excluded from president Park's autobiography publishing project. Meanwhile, Ji-goo strived to help her student Se-jin.

The trio visited the sushi place in Gyeongpodae in ten years. The picture that the hostess showed reminded them of their college dates. Even then, their dates were extraordinary.

So-hee's father suddenly passed away so she goes home in shock. Ji-yeon and Ji-goo visit the funeral hall to console So-hee. Also, Director Kang unexpectedly visited the funeral.

After the funeral, So-hee couldn't sleep. Meanwhile, Ji-goo has an awkward meal with her family in several years. And Ji-yeon finds something special in common with her boyfriend.

So-hee's feelings about director Kang grow. However, she soon gets disappointed by witnessing the intern coming and going to director Kang's house. Ji-yeon thinks about getting married to Ji-yong. Ji-goo concentrates on her origami work. Then, they encounter an unexpected difficulty.

So-hee and Ji-goo grieve for Ji-yeon who has breast cancer. Soon, they help Ji-yeon fight cancer. Meanwhile, So-hee and director Kang have some time to think about their relationship and Ji-goo finally got a chance to meet "Mr. Jong-yi".