The Accidental Further Adventures of the Hundred-Year-Old Man

It all begins with that pesky lever in the hot air balloon. Allan is sitting quietly with his friend Julius, waiting for his 101st birthday party to begin, when someone manages to break the lever, and before they know it, up they go, far above the Indian Ocean... But what goes up must come down, and after they are rescued from the water by a North Korean ship, it's only a matter of time before the pair are entangled in a global diplomatic crisis involving a briefcase full of contraband uranium.
Everyone seems quite interested in this briefcase - from President Trump and Kim Jong-un to Vladimir Putin and Angela Merkel - and from then on it's just one accidental adventure after another. There's a vital government message scribbled on the back of a napkin (after numerous glasses of apple vodka), a disastrous case of swapped coffins, a far-too-close encounter with a very angry Nazi, at least one séance, and plenty of illegal asparagus...