Six boys during a school excursion are sucked into a parallel world in which they turn into dogs. They are forced to live according to new laws in a world where they want to kill them at every turn. Despair and panic accompany the guys in the new reality. They have to unravel the insidious knot of time, find that same ill-fated portal and close it once and for all. But that's all they need their fingers for. Where can I get the missing element in this God-forsaken place? Will their proposed algorithm of action turn out to be correct? Will they be able to leave earthly purgatory?