Grumpy Unicorn returns in this laugh-out-loud graphic novel! Grumpy Unicorn is back home after hitting the road in his first graphic novel. There's nothing that this Unicorn would love better than to just stay in, watch some TV, and veg out. But when his house is dirty, Grumpy decides to buy a cool self-cleaning robot... that due to a factory defect, is determined to conquer the world! It's up to Grumpy to save the day in this hilarious, action-packed, ridiculous adventure!