Vinay, Lillian, and Bryan of "The FOGS" go up against "Michi, Jackson, and Ugochi of "Geeks on Fleek." Contestants memorize the intricacies of the San Francisco streets for the Human GPS round. The FOGS nominate Vinay as their "super brain" to handle... (more) the Number Cruncher round. Then, the teams take on Talking Dictionary and ultimately, "The Cortex."