'Alleycats' is a high-octane, action/thriller set in the cut-throat world of illegal bike racing. When Chris (Josh Whitehouse), a bike courier, stumbles across the brutal murder of a young woman while delivering a package, he finds himself in danger. Realizing that the perpetrator of the crime is a man named Yates (John Hannah) is a well-known Member of Parliament, Chris sets out to blackmail him. But when Chris takes part in an Alleycat Race, an illegal bike race through the city, he is knocked down and killed in a hit-and-run accident - the driver (Virgile Bramly) is Yates' fixer. Chris has been silenced, but there was a witness. Danni (Eleanor Tomlinson), his sister and fellow racer, sees Chris get hit and refuses to believe it was a simple accident. Her forceful and impulsive nature aggravates the police, who are slow to investigate and increasingly untrustworthy. So Danni takes matters into her own hands, uncovering bribery and corruption within the courier community and further afield. As she begins to piece the puzzle together, Danni joins forces with the murdered young woman's father (John Lynch) and the unlikely pair threaten to uncover the sinister truth behind Chris' death and the secret his murderers had hoped would die with him. As she becomes increasingly mixed up in a dangerous and violent world, and the body count rises, Danni must push herself to her mental and physical limits in order to find justice for her brother and come through this