Mrs. Prodd has died after giving birth to a "Mongoloid" baby. Altering Prodd's memories so that he thinks his wife is on a trip and they never had a child, Lone adopts the baby, who has a phenomenal mental capacity and thinks almost like a computer. Together, Lone, Janie, the twins and Baby form what will be later called the homo gestalt. Prodd's old truck is always getting stuck in the mud, and when Lone asks Baby for a solution, Baby helps Lone build an anti-gravity generator. He installs it in Prodd's truck, only to find that Prodd has left for Pennsylvania. The second part of the novel is Baby is Three, which occurs several years after The Fabulous Idiot. Gerry Thompson, a street urchin who has grown up in abusive institutions, is possibly sociopathic. He consults a psychiatrist, trying to piece his memory back together. Gerry ran away from the institution and was taken in by Lone. They lived in a refurbished cave until they found the abandoned Kew house. Lone was killed in an accident and Gerry subsequently became the leader of the gestalt. Lone had instructed the children to seek out Evelyn's sister, Alicia, after his death. In her urban house they were educated and fed under her care. Soon, however, Gerry learned that domestication and normalization had weakened their gestalt. He killed Alicia, and the group returned to living alone in the woods. If anything, Gerry's telepathic abilities are stronger than Lone's. His amnesia was caused by Alicia's having accidentally transmitted her memories to his mind when they first met, triggered by her strong emotional reaction to hearing the words "Baby is three". He learned about her entire life, including her past relationship with Lone, in a split second. After being helped by the psychiatrist, Gerry erases the man's memory of him. The third and concluding part of the novel is Morality. Again, it occurs several years after the previous part. Lt. Hip (Hippocrates) Barrows is a gifted engineer who worked for the US Air Force until the incident which led to his incarceration, first in an insane asylum, then in jail. Janie, now an adult, befriends him and helps him regain his health. He slowly remembers what had happened. He discovered some odd effects on an anti-aircraft range. Practice shells fired in a certain area were all duds. Barrows does magnetic tests and finally discovers