phoenix wright SPEED attorney is Jakkid's first fanfic. It's a crossover between Phoenix Wright and the Sonic the Hedgehog franchise.
In the beginning of the fic, Phoenix Wright is sitting at home, waiting for a murder to happen. The phone rings, he answers it, and he gets sucked inside. He lands in Sonic World, where he meets Sonic the Hedgehog. He is then taken to the detention centre, where he takes Tails' case.
He investigates the murder of Big the Cat, meeting Knuckles the Police Officer. After a brief search of the crime scene, he finds a chaos emerald and goes to court.
At the trial, it's revealed that Eggman is the prosecutor. He calls Shadow as his witness, but Phoenix uses the chaos emerald to prove that Shadow is the killer.
It was actually Shadow who killed Big the Cat using Chaos Control. After the trial Phoenix gets sucked back to his world.