Doc Brown shows Marty his time machine in the DeLorean at the Twin Pines Mall parking lot. Doc tells Marty about the date he invented time travel. He states that the Flux Capacitor is what makes time travel possible.
Cory has a discussion with his class about social media and how it impacts their lives. The discussion covers topics such as online anonymity and how the availability of information on the internet has led to the prevalence of short-lived content. He encourages his students to focus on what is really important and to think for themselves.