Nemo always thought receiving and unpacking packages was fun. But ever since the mysterious stranger started sending him boxes of animated toys (very dangerous!), he realized that not all parcels are worth opening! So when the boy received the surprise box for the third time, he returned it to the post office. But bad luck, someone opened it instead of him! And darkness reigned over Nuding! It's like someone turned off the sun! And this means that Nemo and his friends Fred and Oda urgently need to find the one who was hiding in the package. However, this time they need to be very careful! After all, they will have to deal with a black cat and someone else ...