Hawkins, Indiana, 1983

One late night, 7th grader, Mike Wheeler and his best friends, Dustin Henderson, Will Byers, and Lucas Sinclair were playing their favorite game DD. However, each boy had realized how late it was. The three friends left Mike's place and stumbled upon the woods. These woods had so many paths to choose from, so Lucas, Dustin, and Will took separate paths.

Meanwhile, Mike's mom got a phone call from Joyce Byers, Will's mom, asking if he was still at their house. She told her that Will wasn't there. Joyce and her eldest son, Jonathan were wondering what exactly happened to him.

Davenport Bionic Academy, present day

Today was just an average day at the academy, eat, train, sleep, repeat. The academy's mentors, Adam Davenport and Leo Dooley work hard to help their students, even if they had to work day and night. But no matter how hard they work, they still think about their siblings, Bree and Chase, who formed a new elite team with their superhero friends, Oliver, Skyler, and Kaz. "Leo, Adam, come see me for an emergency meeting." Donald Davenport said over the loudspeaker. The two brothers attended the meeting when they saw their brother and sister, Chase and Bree in shock. The siblings hugged each other tight. "Mr Davenport, why did you call this emergency meeting, Bob and I were about to have another cookout." Adam asked. "Adam, last time you and Bob had a cookout, you burned the canopy with your heat vision." Leo stated. "Anyway, I gathered you all here because I have a mission for you guys." Donald explained. "You're going back in time to fix a mistake I've made in 1983 with this girl named Nancy Wheeler."