Ava and Oliver are back in Hatchtopia, where the Hatchimals are excited for a fantastic fireworks display. The problem is, all of Hatchtopia has suddenly become frosty and cold, and the fireworks display can't happen unless it's sunny! And since Wishing Star Waterfall has frozen over, no one can wish away the snow either. Follow along as Ava and Oliver search for a way to melt the waterfall and end their visit with a bang!

This book also contains exclusive collector cards featuring four fun CollEGGtibles!