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.

The Asian terrorist known as the Eggman plots his escape from prison---and his revenge against Michael; Lisa learns that Michael wasn't killed instantly, as she had been told, but was still alive when he arrived at the hospital; Roger goes house hunting and discovers he's the one being hunted by a flirtatious realtor.