A fur-raising new murder case for the greatest detective duo since Holmes & Watson

Sled dog Athos and feisty kitten Pearl travel with their human to the beautiful island of Sylt to meet a famous animal psychologist. There, they must take on not only a chatty bird and bad-tempered horses, but also a two-legged with murderous plans.

Soon the furry detectives have their paws full with protecting their human and her host and hunting down a very dangerous killer.