After watching the Unsolvable Mysteries TV show, Grim realizes he forgot a million years ago to reap the Abominable Snowman living in the Himalayas. Then, Billy, Mandy and Grim go there to finish the job and also to obtain videographic proof of the snowman's existence. The Yeti, who likes to be called Abom, manages to escape Grim several times, before finally being trapped by the moving glacier. In the end, as Grim watches the TV show again, it is apparent that he may have forgotten to reap the Loch Ness monster too.