This title is part of Bug Club, the first whole-school reading programme that joins books with an online reading world to teach today's children to read. In this Gold-B level Sarah Jane Adventures book: Sarah Jane invites two aliens called the Blathereen to supper. They give Sarah Jane a Rakweed plant as a present and that is when the trouble really starts! Luke breathes in the plant's spores and becomes dangerously ill. Rakweed starts to appear everywhere and it is up to Sarah Jane and the gang to stop it.