Originally published as Opal Moonbaby, this is the first in a funny, warm-hearted series about friendship - and aliens! If you love Jacqueline Wilson, Cathy Cassidy or Liz Kessler, you'll love reading about Opal Moonbaby.

Martha's decided that friends are stupid. Especially if they're anything like Colette and Chloe. She never wants another friend. Ever.

But it's the first day of the summer holidays, and there's not that much to do ... until she spots a strange little furry creature who leads her to Opal Moonbaby. Opal's been sent down from her planet with a special mission: she needs to work out what on earth people are (and my goodness - people are strange) and make a friend. Can Martha help Opal make the Best Friend Project a success?