Eva-Lena is sad. Her boyfriend Soren has died, but in a mysterious way. Eva-Lena finds his diary while rummaging through some belongings he'd left at her place.
Reading it, Eva-Lena discovers that her boyfriend has discovered another world, Chato'ira, where the Meo'Kara and the Aki'Ora have been at war for centuries. To get to Chato'ira, you have to dive into the Forest’s Lake and reach a red light at the bottom of the Lake.
The Meo'Kara are a people of humanoid cats. They live on land. The Aki'Ora are humanoid birds. They live underground. The two nations are set to conquer the whole of Chato'ira. Strangely enough, they have great respect for Soren, as legend tells of a Tactician from another world. This Tactician would put an end to the war.
Eva-Lena thinks Soren was killed in Chato'ira and his corpse returned to Earth, to the Lake where he was found. Who killed him? And why? Eva-Lena heads to Chato'ira to solve the mystery.