Sam leaps into a patient at a Mental Hospital and undergoes electroshock therapy. The treatment causes Sam to act like other people he's been. It also weakens his link to Al. Al must find a way to get his friend back to normal, and figure a way to carry out Sam's mission.
Sam and Al have switched places. Now Sam is the hologram, and Al is the leaper. Al must reunite a returning WWII veteran with the woman he left due to the war. Sam and Al must figure a way to communicate with the future, because Al has the comm device, and Sam has no way to contact Ziggy.