Teams Red and Blue battle heavy rain and compete head to head in a building block challenge. Kaley and Kristin go back to driving school with a relative. Demetrius falls to his knees after meeting the first blood relative on his fathers side. Keith connects with his father's side of the family.

The brothers from L.A. get a geography lesson and throw pottery for the first time. All teams carefully balance their way through a challenge. Demetrius discovers another relative on his dad's side, and Maria attends a very special surprise birthday party.