Minho Choi is from a normal family, he is very popular in his school, his girlfriends name is yuri. Then a new kid from the U.S comes to Korea and starts going to their high school. Everyone loves Krystal and her sister Jessica, so yuri gets jealous and starts to worry that one of them will steal her boyfriend. Krystal and Jessica are loving their school. Then one day Krystal was watching Minho practice the high jump and begin to have a crush on him. Who will end up with Minho?