The episode begins with MASH 4077 cleaning up around post-op as they talk of the hardships of an army christmas. Klinger comes in bearing the mail, and everyone cheerfully receives packages from home, including a package of Peg Hunnicutt's delicious fudge. Colonel Potter and Father Mulcahy confirm that the orphans are coming to celebrate, but Klinger gets word from HQ that the supply shipment with christmas dinner has been stalled due to the blizzard. In the spirit of the season, everyone donates their care packages of food to make a special Christmas Smorgeosboard; everyone except Charles, who out of several large care packages donates only a small tin of oysters. As the children arrive, Klinger encourages them to snub Charles "Scrooge" Winchester by teaching them to say "blech" about the oysters. What Klinger does not know, however, is that the night before Charles secretly took his care packages of confectioners chocolate to the orphanage to continue a long-held family tradition. Meanwhile, an MP arrives and asks Colonel Potter for help as, despite the christmas truce, he has come upon a wounded soldier and brought him quickly to MASH for help. BJ, Hawkeye, and Margaret quietly excuse themselves from the party only to learn that the soldier is brain dead and that his heart will soon follow. Margaret inadvertantly finds a picture of the man's family, including two young children. BJ then embarks on a campaign to keep the man alive long enough for christmas not to be remembered "...as the day their daddy died..." Back at the party, Charles sees Rizzo eating one of his candy bars, and upon further investigation finds out that the head of the orphanage did not give the children their candy as instructed. The man admits to Charles that he sold the chocolate to the black market, but that the money brought more comfort through food and blankets for a month than a moments satisfaction of chocolate could give. A chagrined Charles retires to his tent, where an overly eccentric Klinger brings to him what he can scrounge from the food at the party; save the oysters. Charles, dubious to Klinger's many endeavors, asks for the catch. Klinger tells him that there is none, save that the dinner must be kept secret as part of an old family tradition. Knowing his secret is safe and in acceptance of the obvious apology, Charles regards Klinger by his given name, Max, as the clerk who always calls for Major Winchester regards him as Charles. The two share the moment of mutual respect before Klinger leaves. Back in OR, Father Mulcahy tries to give the Last Rites to the now dead soldier as BJ pushes him away to get the man alive again. Hawkeye convinces BJ to let up, telling him that nothing more can be done. BJ is upset that the man was 15 minutes short of living through the holiday, when Hawkeye fixes the clock and announces "Time of death, 12:05am". Margaret shakes her head at falsifying a record, but goes along for the family's sake. As Father Mulcahy tends the dead, the others leave to see what they can scrounge from the party. Colonel Potter, dressed as Santa, accompanies an orphaned boy holding a plate which holds the reward for the hard-working medical staff; he saved three pieces of Peg's fudge for them. It starts to snow, and all is well for the Christmas Day.