In the 1960s, a time when rock and pop music begins to flourish, British radio stations are tightly regulated by the government, only allowing limited airplay of these genres, much to the chagrin of the youth. To circumvent these restrictions, a group of eclectic and rebellious DJs operate a pirate radio station from a boat in the North Sea, named Radio Rock. Broadcasting rock and pop music 24 hours a day, they quickly gain a massive following, becoming heroes to a generation of music lovers. The crew of the ship is a motley assortment of personalities, each bringing their own unique flavor to the airwaves and contributing to the chaotic, vibrant life aboard the ship.

As the pirate radio station grows in popularity, it catches the attention of government officials who view it as a threat to the country's moral fabric and the established broadcast system. The government embarks on a mission to shut down the operation, introducing stricter laws and enforcement tactics. Meanwhile, on the boat, internal dynamics and romantic entanglements add to the complexity of their situation. The DJs continue to push the boundaries of music broadcasting, deeply aware of the looming government crackdown but determined to stay true to their cause of delivering rock and pop music to the masses, fostering a spirit of rebellion and freedom among the British youth.