Join Pop Pop, Grey Grey, and Tone Tone on their hands-on adventures in 'PopPop's Let's Go Mechanic-ing' series! In this series opener, Grey Grey and Tone Tone assist Pop Pop in fixing an old wagon in the garage. They start by replacing the missing tire with a wrench, apply a fresh coat of paint with a spray can, make wooden railing with a saw, and secure it in place with a hammer. The day concludes with a celebratory wagon ride led by Pop Pop!