Jin Hyuk is a genius neurosurgeon with a cold and severe attitude in his interactions with other people due to his personal pursuit of perfection. Through a mysterious power, Jin Hyuk finds himself transported back in time 150 years. He begins treating people there, but the lack of necessary implements and rudimentary medical knowledge of the period forces him to seek new ways to aid the sick. Through this challenging process, Jin Hyuk eventually becomes a genuine doctor.

An ordinary college student, Lee Seol, finds out she's a princess. The grandson of Daehan Group, Park Hae Young, is put in charge of educating Seol on proper etiquette.

Kim Hyuk (Joo Jin-Mo) lives the fast life as a high ranking mobster in the port city of Busan, South Korea. His closet friend is fellow mobster Lee Young-Choon (Song Seung-Heon). Even though Kim Hyuk seems to be on top of the world, he is haunted by the memory of leaving behind his younger brother Kim Chul (Kim Kang-Woo) and mother as they attempted to flee into South Korea from North Korea. Kim Hyuk's mother was beaten to death and Kim Chul imprisoned after they were caught by North Korean authorities.Kim Hyuk then travels to Thailand with new gang recruit Jung Tae-Min (Jo Han-Seon) for a meeting with Thai gangsters. The meeting turns out to be a set-up, planned in part by Jung Tae-Min. Kim Hyuk is able to shoot his way out the meeting, but he is later caught by the Thai police and imprisoned. When good friend Lee Young-Choon hears of what happened to Kim Hyuk in Thailand, he goes to the Thai gang's holdout in Pusan to kill their boss. During the shootout Jung Tae-Min is shot in the leg.Three years later, Kim Hyuk is finallly released from prison and travels back to Busan. He finds his close friend Lee Young-Choon washing cars now and has a limp leg. Jung Tae-Min, the man that betrayed him, has climbed up the mob ranks and is now a feared crime boss. Furthermore, Kim Hyuk's younger brother Kim Chul has arrived in Busan and works for the Busan Police Department. Meanwhile, Kim Chul keeps close tabs on Jung Tae-Min as he attempts to take down their gang.When Jung Tae-Min attempts to take out Kim Hyuk's younger brother, Kim Hyuk throws himself back into the gang world to exact revenge.

The drama will be about two men whose fates are crossed from the very first day that they were born. Both men were born in the same hospital. When he was a teenager, Lee Dong Chul witnessed the death of his father. From then on he promised to seek revenge on the man who caused his father's death, Shin Tae Hwan. But unbeknownst to everybody is the fact that Dong Chul's younger brother, Dong Wook, was switched at birth with Tae Hwan's son, Myung Hun. Dong Wook grows up to become a prosecutor and vows to help his brother seek revenge. But what happens when they find out that they're not brothers? What will Dong Chul do when he finds out that his real brother was raised by Shin Tae Hwan and that the brother that was beside him all these years is the son of his enemy?

Two men, one woman as they climb for the summit of a mountain. Tired and weathered, a bond forms amongst the three. But, can they get to the top ...

Clever high school girl Ye Won falls into an unlikely relationship with the wealthy and arrogant Eun Seong.

The king of the school, Eun Seong is quick with the fist and insufferably rude, but Ye Won realises that beneath his tough exterior, he is struggling to overcome the shadows of his past.

Based on Guiyeoni's novel.

Yoo Min-woo's (Song Seung Heon) first love was Soh Eun-hye (Shin Ae). No love was greater than the love between these two...until Eun-hye get's into a car accident. Eun-hye dies...leaving one thing left behind...her heart. Shim Hye-won (Son Yeh Jin) has suffered from a terrible heart disease ever since childhood. Miraculously she finds that she will be obtaining a heart from a donor, Soh Eun-hye.

Suffering from the pain of a heartache, Min-woo goes to Paris to study...the memories of Eun-hye still rest in his heart. When he returns to Korea, fate takes a turn and brings Hye-won and Min-woo together. When the two first meet, Hye-won's heart (Eun-hye's heart), oddly beats faster when she is around Min-woo.

Park Jung-jae (Ryu Jin) is Hye-won's boyfriend. Park Jung-ah (Han Ji Hye) is Jung-jae's sister and she meets Min-woo in Italy and falls for him...

Hye-won doesn't know why or what she feels when she's with Min-woo...and Min-woo feels guilt toward Eun-hye, because the feeling of love rises once again as he continues to see Hye-won...