Comet in Moominland

On their journey they meet some interesting people - such as Snufkin the super tramp, and the Hemulen who rescues them from an underground tunnel - and have narrow escapes from such menaces as crocodiles and giant lizards! And on their way back Moomintroll meets the beautiful Snork Maiden and is a changed Moomin for ever after. But what about the comet - and is the World Wiped Out?...