Picking up from Part 2 of the hit series. After running away to Spain, Shiro gets a call which causes him to run back home with Kyla. This ends in heartbreak.

Blue Story is a tragic tale of a friendship between Timmy and Marco, two young boys from opposing postcodes. Timmy, a shy, smart, naive and timid young boy from Deptford, goes to school in Peckham where he strikes up a friendship with Marco, a charismatic, streetwise kid from the local area. Although from warring postcodes, the two quickly form a firm friendship until it is tested and they wind up on rival sides of a street war. Blue Story depicts elements of Rapman's own personal experiences and aspects of his childhood.