In 7th Avenue, sinister gangs thrive on the thought of wreaking havoc. Their presence is a pain to the police, and an agony to the residents.  One day, when these gangs decided to take over the basketball court by making it their parking lot, the youngster named XiHa can bear it no more.  One by one he smashes every car in sight. This is a game for the thrill seekers where players use the basketballs to shatter the cars into broken bits. Welcome to Boom Street!