Taeyeon Kim                 
  - a very beautiful Angel 
 - fall down from heaven because she always disobey God
  - so she can go back to the heaven she should change the person. 
 - the first one she see when she fall down its the person she should change

Myungsoo 
- a bad boy 
- became a thief when his father and mother died in a car accident when he is 19.
- live his life with his bestfriends Ljoe and Donghae who is also his partner in crime.
- the first person Taeyeon see whe she fell down from heaven
- fell inlove with the angel

Kim Hyuna 
- neighbor of Myungsoo
- who always flirt with Myungsoo

Ljoe Byunghun & Choi Min Ho 
- also fell inlove with Taeyeon 

Donghae Lee
- brother of Taeyeon (but they both dont know)

Donghae parents died because of a typhoon and landslide
his father died because he is hit by a tree
his mother died because she is cover by a land.
in that time taeyeon is only one year old
but she survive because there is a man who save her.
and Donghae survive because he is saved by a rescue team.
the both of them did not see each other again.
donghae became a street children.
taeyeon live with a man who save him and with the son of that man named Myungsoo.
in that time myungsoo is 3 years old
and at the age of 4 of myungsoo
he is get by his mother (the parents of myungsoo was divorced)

when taeyeon became 17 years old ..
she died because of a cancer.
but myungsoo did not know about this.
at the age of 19 Myungsoo became alone when his mother and step father died in a car accident.