the third installment of the National Lampoon's Vacation series is about Clark W. Griswold (Chevy Chase) going out on a limb to give his family a good old fashioned family christmas. From digging a giant christmas tree out of the ground, to covering the entire house with christmas light, he goes all out to impress his family, and his in laws, even his univited guest Cousin Eddie (Randy Quaid) who brings his trailer and Family along. From exploding turkeys, a Squirrel attack, and Even a visit from the SWAT team, Christmas vacation provides Holiday humour for everyone.