The heart of the stream (#4). Ryan K., Davis D.

The lost sun escaped to freedom. The hometown of the final, the pier of Kluchaned, is destroyed, and the pirate river rapidly turns into a black stagnant swamp. The existence of all countless worlds is under threat. In addition, Fin and Marrill were faced with the betrayal of the closest friend. And now they are forced to fight with him, and yesterday’s enemy in the allies. To stop the catastrophe, friends have to go to the heart of the stream! So far they have not yet taken away... But what if they have yet to meet the most powerful enemy?!