While investigating the most recent robbery perpetrated by the infamous Mole Squad, April and the Turtles stumbled upon a secret meeting between the Mole Squad and Dr. Floyd O'Toole, a scientist who has been missing for weeks. In their effort to capture the Mole Squad, the Turtles underestimated their abilities and allowed them to escape with Dr. O'Toole's Sonic Pulverizer, a device he developed as a tool not as a weapon. Frustrated that every criminal in town wants to use his inventions for evil purposes, Dr. O'Toole decides to give up the science life and become an insurance salesman. Until then, he has asked the Turtles to protect all of his research papers, and especially the video tape documenting his proudest achievement yet, the Hyper Thruster. Back at the lair, the Turtles lament the loss of Dr. O'Toole's genius while Donatello reminds them that not all inventions have to have an evil purpose, like his Transdimensional Communicator, a device he created to stay in touch with