Brought to the depths of the sea by his friend, the dolphin, Philipp enters the realm of thoughts. Here, the royal couple of good thoughts approaches him with an urgent request: he must travel to the realm of bad thoughts and retrieve their Crystal of Purity. The crystal has the power to transform all evil back into positivity. Since it has been absent from the realm of good thoughts, their strength has been waning, preventing them from leaving their homeland to return to the world. This has disrupted the balance between good and evil. However, the journey is not without danger, as the evil Overthought, the worst of them all, uses all means to tempt Philipp. The Crystal of Purity is hidden deep in the heart of the realm of bad thoughts. To find it, Philipp needs more courage than ever before.