There are many street races in the Initial D Series. This OVA has no plot other than to collect all the street races into one stage. The dialog during the original races is left in.

Despite the Ends’ attack on Verlina being successfully repelled, the war has not yet ended. With the monster armies regrouping, the Black King tightens his grasp on the already conquered territory. New conflicts erupt all across Orte, as its remaining forces struggle to retain control over long-oppressed demi-human races. While Ends grow more potent each day, Toyohisa Shimazu remains unconscious after heavy injuries suffered during the Battle of Verlina. Facing enemies on every side, humanity’s fate is still on a knife's edge.

Delinquent Juu Juuzawa is a lone wolf who does not see much use in befriending people. So when a girl named Ame Ochibana claims they are linked together from their previous lives, he is highly skeptical and doesn't want anything to do with her. Even stranger is that her fondest wish is to be his servant. Thinking that Ame must be delusional, he tries to distance himself from her. But when a classmate is murdered, Juu instead decides to keep her close, believing the strange girl to be the culprit. However, her intelligence and skill begin to prove invaluable as the two begin working together to solve the murder. Denpa-teki na Kanojo weaves together a story of love, loss, and devotion, showing that allies can be found in the most unlikely of places.

One morning, Hachiman Hikigaya contemplates the superfluous nature of marriage and its misleading image of happiness. However, he is forced into confronting his skepticism when the Volunteer Service Club is tasked with assisting a local municipal magazine advertise the allure of marriage to younger people. Unfortunately, neither the club's advisor, Shizuka Hiratsuka, nor the other club members have any firsthand experience with the subject. With only one week until the deadline, the group must quickly learn about the intricacies behind the special ceremony, even if they have to resort to more creative means!