An old friend of Theo's tries to get him to go into business, but the friend's line of work happens to be illegally obtaining and selling human organs; Roger allows Lisa to list his house for sale to help her out and he's stunned when a tremendous offer is made on it.

Michael gets bitten by a deadly mosquito carrying the encephalitis virus. What's bugging Theo, however, is how the insect got to Michael months ahead of its season. Meanwhile, an unhappy Heather skips school and seeks solace in a New York science museum.