Clara recieves a phone call from the past. The doctor tells her that he hopes she'll continue to be there for him in his new form despite the major changes to his looks and personality.

Before regenerating, the Doctor's memories of his companions come to life, giving him a chance to say good bye to them one last time.

The math club illustrates how to use the distributive property in reverse through factoring. As the members of the club explain, this technique can be used to check your work when utilizing the distributive property.

After spending time with the Crystal Gems, Peridot betrays their trust and calls Yellow Diamond, one of the main leaders from their homeworld, about the status of a military mission that can destroy the Earth. Peridot tries to convince Yellow Diamond not to eliminate the planet, but realizes that Yellow Diamond's opinion can not be changed and tries to fix her mistake.

Double D receives a psychology manual in the mail which describes the latest techniques in studying abnormal human behavior. He shows Ed and Eddy inkblots and asks them to interpret the blots. It is important to note that the Rorschach test is not a new technique; it was created in the 1920's and widely used in the 1960's.