Robby was a boy who studied in high school and went to karate classes, he was friends with Miguel Diaz, a boy he met in karate class. Robby always wanted to be part of Dragons Fire, the most famous karate team nationally. Many said that in a karate competition a boy from Dragons Fire broke another's leg and because they were somewhat violent in their attacks and blows, too competitive, they hate to lose, resentful.

The Dragons Fire sensei was a rather large man. Robby belonged to a karate team called Cobras. One day during his karate practice at the time of departure, while Robby was waiting for his mother to come for him, he saw a girl wearing the Dragons Fire uniform, a black uniform with red edges and a dragon logo on the back, come to look for Miguel. The next day Robby went to ask Miguel about what he had seen yesterday.