What is the main story of The Heirs?

Heirs mainly tells the love story between the heroines Enshang (played by Park Shin Hye) and Jin Tan (played by Li Minhao). Eun-sang's life is just like what she said. Time without work is a luxury for her, and there is only one "work paradise" in her paradise. My father died of illness, and my sister left them and went to America alone because of the heavy burden of life. She leads a miserable life with her stupid mother.

The leading actor Jin Tan (played by Lee MinHo) is the heir of the leading Korean enterprise Imperial Group. As the son of the chaebol, he has a handsome face and a distinguished life experience. There is an ulterior secret hidden under this dazzling aura-he is an illegitimate child.

Cui Yingdao (Kim Woo Bin) of IQ 150 is the sole heir of Zeus Hotel, who likes to bully his classmates with a good heart. Holding the trump card that Jin Tan is an illegitimate child, he realized that the transfer student Che Enshang was Jin Tan's weakness, bullying Enshang to anger Jin Tan, but in the process he unconsciously fell in love with Che Enshang. His already hot relationship with Jin Tan has added a new reason to go to war-rival in love. Although Enshang finally chose Jintan, she couldn't stop Cui Yingdao's love for her.