The Big Bang Theory (Butt-Ugly Martians Chapter Books)

When Muldoon captures Dog and takes him to the terrifying, laser-cutting scientist, Dr. Brady Hacksaw, the Butt-Uglies and the kids find themselves on a highly hazardous rescue mission. If that wasn¹t bad enough, things get even worse when the kids encounter a Nitchup, a seemingly harmless alien that is rather too sensitive to Earth. Can the Butt-Uglies save the day?