Notoriously (and delightfully) unreliable narrator Henry is late to a museum where his class is spending the day. But he has a plan: He'll just catch up in one of the exhibits. But that's not possible in these halls! With volcanoes erupting, dinosaurs charging, and secret stairwells lurking, reuniting with his classmates becomes a quest of outrageous proportions. Young readers will revel in this entertaining book's over-the-top antics.