An angry Willie Nelson accuses his road manager, Sonny Cross, of embezzlement just hours before making a San Francisco radio appearance. Sonny later arrives at the radio station to find a note summoning him to a side entrance. As Sonny disappears down an alley, two shots ring out, and an engineer throws open the side door to find a blind woman, Mrs. Mass, screaming hysterically -- and Willie Nelson hovering over Sonny's dead body. An injured Captain Stottlemeyer decides to put Lt. Disher in charge of the investigation, and Disher loses no time in calling in Adrian Monk.

Miss Piggy breaks her leg, so Kermit and the crew have to broadcast "Up Late" from the hospital; Rizzo, Pepe and Yolanda have to keep Pache out of trouble; Miss Piggy and Kermit take stock of their relationship; Kermit seeks advice.

Energy use and sustainability; endangered animals; children who work to protect nature; the importance of conservation and habitat protection; readings and performances by Elizabeth Mitchell, They Might Be Giants, Dan Zanes and Willie Nelson.

The recovery of the bald eagle from near-extinction provides a lesson on how conservation can reverse environmental damage; an environmental activism group for children spreads awareness; weather extremes; protecting newly hatched sea turtles.