A new team assembles to restart the Quantum Leap project. Lead physicist Ben Song takes an unauthorized leap into 1985 as the team scrambles to figure out what happened and how to get him back.

Ben finds himself headed into orbit aboard the Space Shuttle Atlantis in 1995. Addison confides to Ian about a discovery and finds herself at odds with Magic and Jenn.

Ben lands in 1979 Chicago as Jack Armstrong, a devoted security guard to talented pop singer Carly Farmer. During Carly’s prep for a concert, it quickly becomes clear her life is in danger and Ben must determine who is trying to kill her and why.