Episode Title:Operation Valentine.Episode Description:The Thornberrys are broken down, The Mail plane drops of the Thornberrys current batch of mail. Debbie tries to bake cookies, which turn out badly. They try to escape from an angry eagle by climbing up a small mountain. Eliza slips and nearly falls. Darwin pulls her up on top of the small mountain. Nigel was on an explore of his own and comes across Donnie. Nigel picks up Eliza in his arms and carries her back to camp. Marianne upon seeing Eliza's symptoms quickly looks them up in a medical book. They have to get Eliza to the hospital ASAP because it is her appendix and she needs an operation. They try taking the mini-com but it gets a flat and they are unable to put the spare on it because the spare is already being used.