Ronny and Gretchen are forced to act when the alien power threatens to overwhelm them.
Gretchen has reached the source of the strange power and starts to learn it's secrets.
Bevis has gone missing and both Gretchen and Ronny realise the danger they are all in.
Unexplained events are affecting the whole community of Wakaatua, and Ronny starts to get scared.
12 year old Gretchen comes to stay on her uncle's farm for the holidays, but shortly after her arrival strange things start to happen. Gretchen has a passion for science and a talent for all things mechanical, which is why the old brass weathervane fascinates her. But the brass daisy rod has a complex and terrifying significance, and Gretchen and her new friend Ronny discover its links with the far distant Sirius, the Dog Star.