This film series explores familial strife and the quest for personal identity through motorcycle riding. The first film follows two hippie bikers seeking spiritual meaning. The second film, through family history, reveals a character's legacy from the first film, showing connections through a shared love of motorcycles. The third film portrays a young man passionate about motorcycle repair, rebelling against his conservative father to find his identity. The fourth film features a young woman striving to prove herself as a motorcycle racer in a male-dominated sport, facing gender discrimination.