Park Hong-Jun, also known as Teddy Park, is a wealthy and famous mafia boss. With a strong family clan in South Korea and a mafia famiglia in Italy, he is feared as the strongest man in the underground community. Park Bom is his beloved sister, whom will take over the title as boss if Teddy dies early.

But the day comes too fast when Teddy is diagnosed with a deadly disease and only has a few months to live. Bom has little time to prepare to become the next boss. Scared and unprepared, she also has other families that wants to eliminate the family and her.

Teddy entrust Bom with his most trusted guard, Bang Yong Guk. Yong Guk is also the leader of the assassin squad B.A.P, whom work for Teddy's family.

 As they go through ups and downs, feelings blooms.

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Park Hong Jun, aka Teddy Park - 33 years old.

Park Bom Lee - 25 years old.

Bang Yong Guk - 24 years old.

Assassin squad B.A.P

     24                 23                  20                 20                   19                17

Park Bom's guards and best friends.

CL, Leader. 23 years old. Teddy's wife.

Dara, 25 years old.

Minzy, 19 years old.

Others will be introduced later~!!