Kevin and Chale go on a road trip to retrieve a cookie jar that Kevin sold before realizing how much it meant to Kendra; Vanessa and Kendra try to help Kyle with dating.
At Halloween, Team Scorpion takes on a case to prove the existence of ghosts on the Queen Mary but find an all-too-real disaster when they locate a “ghost ship” on a deadly collision course. Also, Walter considers taking note of Paige’s interests to benefit their relationship.
Kara investigates a secretive new group whose leader, Thomas Coville, has a mysterious connection to Supergirl. Meanwhile, Samantha feels like she’s letting Ruby down, and J’onn confesses an old secret.
Dr. Shaun Murphy and Dr. Claire Browne devise an experimental procedure that can save the leg and life of a young groom, that is if his bride-to-be and parents can learn to work together. Meanwhile, Jared struggles to emotionally connect with his patient whose scars may prove too deep to overcome.
The knockout rounds begin with each artists paired against a teammate once more, but this time they each select their own song to perform individually, while their direct competitor watches and waits. Kelly Clarkson serves as a key adviser and is on hand to work with all of the coaches and their teams as they prepare. The coaches alone choose the winner from their team to move on to the Playoff shows and the artist not selected is available to be stolen by another coach.