Courier Willie (Joseph Gordon-Levitt Joseph Gordon-Levitt)'s bike is a modified fixed gear with a steel frame, coupled with his driving skills and agility, he can travel through crowded streets every day. One day, a woman gave him a "very important dispatch" and asked him to send it to Chinatown in 90 minutes. But on the way, the police stopped Willie and forced Willie to hand over the dispatch. The desperate Willie had to open the envelope and discovered an amazing secret. So, can Willie, who discovered the secret, deliver the message accurately within 90 minutes? Can his bike run as fast as police cars and gangs?