2 8 , ▁ 1 9 8 3 , ▁ending ▁the ▁series ' ▁original ▁run . ▁The ▁episode ▁was ▁written ▁by ▁eight ▁collabor ators , ▁including ▁series ▁star ▁Alan ▁Ald a , ▁who ▁also ▁directed . ▁ ▁The ▁episode ' s ▁plot ▁chron icles ▁the ▁final ▁days ▁of ▁the ▁Korean ▁War ▁at ▁the ▁ 4 0 7 7 th ▁M ASH ; ▁it ▁features ▁several ▁story lines ▁intended ▁to ▁show ▁the ▁war ' s ▁effects ▁on ▁the ▁individual ▁personnel ▁of ▁the ▁unit ▁and ▁to ▁bring ▁closure ▁to ▁the ▁series . ▁After ▁the ▁ce ase fire ▁goes ▁into ▁effect , ▁the ▁members ▁of ▁the ▁ 4 0 7 7 th ▁throw ▁a ▁party ▁before ▁taking ▁down ▁the ▁camp ▁for ▁the ▁last ▁time . ▁After ▁te ar - filled ▁good by es , ▁the ▁main ▁characters ▁go ▁their ▁separate ▁ways , ▁leading ▁to ▁the ▁final ▁scene ▁of ▁the ▁series . ▁ ▁Plot ▁As ▁peace ▁negoti ations ▁continue ▁during ▁the ▁Korean ▁War , ▁Haw key e ▁Pier ce ▁under go es ▁treatment ▁at ▁a ▁psych iat ric ▁hospital ▁after ▁suffering ▁a ▁nerv ous ▁break down ▁in ▁the ▁OR . ▁Prom pt ed ▁by ▁Sid ney ▁Fre ed man , ▁he ▁gradually ▁rec alls ▁an ▁incident ▁that ▁occurred ▁while ▁the ▁personnel ▁of ▁the ▁ 4 0 7 7 th ▁were ▁returning ▁to ▁camp ▁from ▁an ▁out ing . ▁Their ▁bus ▁had ▁stopped ▁to ▁pick ▁up ▁some ▁refuge es ▁and ▁wounded ▁soldiers , ▁but ▁was ▁forced ▁to ▁pull ▁off ▁the ▁road ▁in ▁order ▁to ▁avoid ▁being ▁sp otted