Calvin reluctantly agrees to let Marty create a website for his auto shop in the hopes of drumming up more business. Also, with Gemma out of town for a school retreat, Dave makes it his mission to prove to his son, Grover, that there's more to life than his favorite gadgets.

Dave's patience is tested when Gemma's freeloading sister, Brittany, suddenly shows up with plans for an extended stay. Also, Calvin grows frustrated that Malcolm is still living at home, even with a new job.