Plaid Tidings is the hit holiday sequel to long-running "Forever Plaid." This holiday edition continues the story of the singing group whose lives were lost in an accident involving a busload of nuns en route to see "The Ed Sullivan Show." The heaven-sent boys are back from heaven to sing songs of the 30's, 40's, 50's, and a "Plaid-erized" version of Christmas specials to fulfill their mission of creating harmony in a troubled world.