Glavnye geroi etoi misticheskoi istorii — byvshaya uchitel'nica madam Pen, podrostok Gosha i krysenysh Martin — vstupayut v bor'bu so zlymi silami, chtoby spasti gorod ot zaklyatii povelitelya krys Magnamursa. Druz'ya ubezhdayutsya v tom, kak legko ozlobit'sya i poteryat' chelovecheskii oblik. No esli ryadom neravnodushnye pomoshchniki, to mozhno preodolet' lyubye slozhnosti i razgadat' starye tai...