The plot follows Rowan and his experience with the Travellers who are suspected of carrying a dangerous sickness that causes the people of Rin to fall into a deep and heavy sleep.

After their even more mysterious departure, a sleeping sickness appears in Rin and the Travellers are suspected of causing it.

It turns out that the berries are the smaller and infantile form of big trees growing beneath the Mountain itself.

Rowan, Allun and the Travellers must save the town with the help of a potion Sheba made of slip-daisy roots.

Rowan is a shy and weak boy of the town of Rin, but nevertheless he is the main character and protagonist, as he appears to be very brave when it is needed.