The Bittering family arrives on mars via rocket ship.Henry wanted to go back to earth because he got this weird feeling that the Bittering don't belong.
The planet then started to change and so did the Bittering. Their grass turned purple, they started to turn a darker shade, and their eyes turned golden. This all happened because of the weird food that the family was eating. Henry refused yo eat the food because that is what was changing his family.
Laura tells he family that all of the rocket ships that come to get them had exploded because of a bomb that exploded on earth.
Henry tried to convince his family to build a rocket ship out of metal scraps, but everyone thought he was crazy and refused to.
The Bittering completely changed and started living as normal martians from mars. There names changed and so did their language. Also, their perspectives on humans changed as well.
Five years later, A ship arrived to save them but they couldn't find the people because they didn't know that they had all turned into martians. The people that came to save them ended up changing to martians.