I am dividing summary into 2 parts cause this message is pretty big to sent it in one post
Part 2
Taehyung - Student , he is Bubbly boy always make everyone around him happy he is middle class person. He stays in a small apartment with his sister(jisoo), who is secret agent always went on missions all the time. So he mostly stays alone . He has a neighbour who is a grandma living with a grandson who is a cute 6 year old little boy.
Taehyung family
# sister (jisoo)
....Coming to story....
One day jungkook went to college function as cheif guest, there he encountered with Taehyung who is student. After that few things happened and jungkook got curious and decided to live in same colony as Taehyung. So he bought an apartment infront of Taehyung apartment. The damn reason for this whole thing is . Jungkook think Taehyung is poor according to jungkook Taehyung is poor because he lives in small apartment and who thinks 5 millions penthouse is expensive. According jungkook 5 millions is cheap price . So Taehyung tried to make him understand that he is not poor but middle class person. And assistant park jimin hated Taehyung for this, for him because of Taehyung his boss jungkook living in a cheap and poor apartment and meeting all these low class people. So holds grudges against Taehyung. Soon jungkook and Taehyung get married and jungkook takes Taehyung to his family mansion. There madam ( jungkook grandmother) hates Taehyung cause he is not rich and jungkook didn't get marry to the person to her choice , so she ask Taehyung leave mansion. However, Taehyung makes a challenge that he will win each and every person heart in this family in 6 months. After 6 months even if one person wants him to leave mansion he will. So he eventually bring changes in family he brings life to that lifeless mansion.