A marriage is usually depicted as the perfect happy ending.

Yet, the reality is: that is not always the case.

For Kim Haesoo, it could only the beginning of a painful chapter of life.

When Sonyeo reunites with her high school love, she knew she could not let go of him.

Not when she knew she needed a companion badly in her old age.
A year after their meeting, they get married.

Sonyeo's four children disapproves of their relationship and Youngsoo's only daughter did not turn up for their wedding.
Despite the oppositions, they end up moving in together.
Kim Haesoo has to learn to adapt with her new siblings, her new mother, her new school;
And most importantly, her new home.

Secrets and pasts get revealed along the way.
Things get messy and misunderstandings occur.
How will this family stay united despite the challenges they face?

And what happens when Haesoo finds the biggest obstacle in her life heading her way?

One thing's for sure:

things were about to get very, very messy.