Sorayama Shun wakes up the day after his girlfriend breaks up with him to find a letter addressed to him, written by none other than himself... from 25 years in the past. In the letter, Shun's younger self reminds him of the dreams he once had, of becoming a successful professional racer and owning a Countach. Fired up by a relentless determination to make his childhood dream come true, and with a stroke of good fortune, Shun finds himself the proud owner of an LP400 Countach.