Holger and Pebble are best friends. So it's no wonder that Holger wants to make Pebble a very special birthday present. And what could Pebble use better than a Pebble Car?! A great idea! Pebble is overjoyed and tries out his present straight away. His bum fits perfectly in the seat. But - oh no - Holger has forgotten something very important: the brake! This is Holger and Pebble's second adventure. Almost three years after the first book, "Holger's House", was written, working on it now feels like a reunion with old friends. And a birthday is the perfect occasion for that!