Linus Baker lives strictly according to a schedule: in the morning - work as an inspector in the Department of Magical Youth Affairs, in the evening - cozy gatherings at home with a cat and old records. Linus is not going to change anything in his life, until one fine day he receives a serious task from the Extremely High Management... The inspector has to go to an orphanage on the mysterious island of Marsyas, where six unusual children live - the son of Lucifer, an unidentified green creature, a dwarf girl , a wyvern, a werewolf boy and a forest sprite. But they are not the only secret of the island. The orphanage is run by the mysterious Arthur Parnas, he sincerely loves his pupils and is definitely not as simple as he seems. The director is ready to do anything to protect children from the dangers of the adult world, even if this world has to burn to the ground.