Naota is a normal boy who kills some time with a normal girl by a stream that flows underneath a bridge. Nothing unusual happens in this town. The fact that Haruhara Haruko crashes into the main character with her Vespa a short while later and subsequently hits him over the head with her Rickenbacker 4003 bass guitar doesn’t really make any difference to any other day here. The at first glance unconnected, bizarre events that don’t seem to follow any pattern whatsoever don’t change anything about Naota’s boring life, either – because nothing incredible ever happens in this town.
When easy-going Aoyagi meets an old friend for a fishing trip, he ends up drugged, framed for the Prime Minister's assassination, and on the run from corrupt cops. It's only the beginning of what quickly becomes the worst, weirdest day of his life. But he'll get by with a little help from his friends, who include a famous pop diva, a rockabilly deliveryman, a crippled old gangster, and the world's most cheerful serial killer.
Set 2 years after prior film "Bayside Shakedown 3: Set the Guys Loose," a major case occurs that has the potential to take down the entire police organization. For the next 3 days, Shunsaku Aoshima and his colleagues struggle to unravel the case...
