Tara Duncan travels to Otherworld, the magical planet she comes from, to learn how to use her magical powers. Once she arrives, she immediately has an unpleasant encounter.

The empress asks Tara, Cal and Robin to investigate a tree in the park that seems to be sick. The gardener thinks it is cursed. Tara discovers the wonders and dangers of Otherworld's plant kingdom.

Tara discovers that polo is the favourite sport in Otherworld and sees two teams competing. One of them is led by Angelica, a mean sorceress. Sparrow, Tara's friend, is on the other team.

In the city of Tingapore, colours suddenly disappear. As residents are evacuated, Tara, Cal and Robin travel to Golbu Dol, a goblin who specialises in colours, hoping to discover the reason for this disaster.

Master Chem wants to show Tara and her friends a herd of golden cows, the gift for the delegation of dragons. But when they arrive at the barn, it turns out to be a trap.

During Master Chem's lesson, Tara and her friends see that a gift to the empress has arrived: a beautiful bird. Angelica plans to steal the bird and enters the throne room.