THis story take place in 2001

Jung Jessica , (Soo yeon)(16 y.o) has always had a dream to be an heiress. Who knew that one day this dream would come true. Short temper girl, Violent , but so brave and hard working

Granpa Jung EMP(emp stand for Emperor)(60y.o) , The most wealthy and Number one Bussiness Empire owner of Jung Holding's .After Losing his son and daugther in law in accident also losing his grand-daugther being kidnapped by his enemy. He finally adopted 4 Perfect handsome excellent guys from orphanage after selecting them hard. He raised them to be his successor

Those guys are

Kwon Yuri (YUL)(17.yo) always feel so ashame because he just orphanage , cool , calm , already handle bussiness empire because he so excellent, love working out to refresh his mind, good at swiming

Kim Taeyeon (TAENG)(17 yo) playboy after being hurt by a girl , always messing around, never interest in bussiness 

Choi Sooyoung (SOO)(16 y.o) just love to eat and play around too

Im yoona (YOONG)(16 yo) Playful kid , fall in love for Jessica at the first sight , dork 

Hwang Tiffany (16 yo) Jessica best friends since childhood