A big, grey wall embraces a small grey world. In this world, colour is just a memory. A dream. Geelgrommel and Blougrommel live here – they are the last colours that are left. A grommel always wears a beanie. And never takes it off. But on one unexpected day, a day unlike any ordinary grumpy grommel day, everything changes ... The whispers of the little men on the wall become a whirlwind. Beanies end up in the water. The grommels get lost ... What happens when opposites find each other? And what awaits behind that wall? Grommels is a playful journey of discovery, where beauty can be found in simplicity. Where we can feel how it once was when nature’s colours could grow within us all – we just have to open our eyes.