Hilo: The Great Big Boom (Hilo Book 3) - Judd Winick

The third book in a brilliant new series perfect for fans of laugh-out-loud school adventures like Jedi Academy and Diary of a Wimpy Kid. When we last saw our INTREPID TRIO, Gina had been sucked into a mysterious portal to who-knows-where. But friends don't let friends disappear into NOWHERE! It's up to D.J. and Hilo to follow her! Will there be danger? YES! Will there be amazing surprises? OF COURSE! Will Gina end up being the one to save them? DEFINITELY! With the help of Polly, the magical warrior cat, the friends will have to battle bad guys and face disgusting food, an angry mom, terrible knock-knock jokes, powerful magic, and more! Will they survive and make it back to Earth before the portal closes again?