Two Hearts That Beats As One

jimin , Taehyung and bambam are the heirs of the family even though they have different mother but they have the same father and also they have very close relationship with each other ....

What will happen if they met a girl who is from a completely different environment as them ... what will happened to this three brother and that girl??

Mina and Taehyung
Mina and jimin
Mina and bam bam

who will Mima choose?? what will it happen to them that make them change??