Four teams take off from St. Louis with a surprising twist at the starting line. Chonta discovers her slavery roots, Maria is shocked by her family tree, and Marcus takes part in a family dance-off. Plus, a texting war breaks out when the twin sisters get ahold of their phones.
Teams Red and Blue battle rain and compete head-to-head in a building-block challenge. Meanwhile, Kaley and Kristen have to go back to driving school, and Demetrius falls to his knees at meeting his first relative on his father's side.
All the teams must "smell" their way to victory while competing in a unique challenge. And little does Maria know, but her life is about to be changed forever as a door opens.
All teams must carefully balance their way through a challenge before racing to meet their relatives. Then, while the brothers from L.A. get a geography lesson and throw pottery for the first time, Maria attends a very special surprise birthday party.
The teams show off not only their singing abilities but their paper airplane-making skills as well. While Marcus meets the person who linked him to his father, Elizabeth discovers her dad's side of the family and Team Black learns that twins run in their family.
This week, immunity is on the line, and a hamster-like challenge has the teams rolling in all directions. Chonta's surprised by an emotional cousin, while Team Red plays hockey, Team Green learns to wakeboard, and Team Black practices their baseball skills.
The teams' art skills are put to the test and put on display in this week's challenge. Then, Elizabeth's emotions are tested when she meets a close relative, and the twins continue their journey and meet a key relative in the search for their dad.
Team Green gets off to a rough start when Marcus's dad shows up late to pick them up. While they set off toward Vegas, Team Red heads toward a relative that will help Elizabeth understand more about her maternal side.
An audible memory challenge stumps the teams. Demetrius meets a key paternal relative. Marcus and his Dad share a heartwarming discovery. A trip to Day 10 is on the line for two teams with two strikes!
The final teams race to be crowned champion of Relative Race!