The Extincts are back and ... Lug is leaving? Fresh off their takedown of the nefarious Dr. Z, the Rescue Ops Acquisition Rangers need a bit of a break. Opening a zoo and gift shop seems like a great idea to Scratch, Martie, Quito, and Ursa, but Lug isn't so sure. Over in California, wildfires are raging and people need help, but can Lug save the day without his friends? When he joins a group of smokejumpers to help put out the fires, Lug starts to think these natural disasters may not be so natural. What--or who--is starting these wildfires? One thing is for sure: It's going to take the whole Extincts team to get to the bottom of it!