Paul McCartney’s hard at work on a sequel to his Grandude children’s book.

In the sequel, Grandude and the kids set out on an epic journey in the Green Submarine to find their music-loving Nandude.

The first book, released in September 2019, was translated into 32 languages and sold 300,000 copies around the world.

Grandude’s Green Submarine will be published on 2nd September.