Jon's mom is dead, yet she still comes every night before he falls asleep to wish him a good night. But one night she does not, and Jon can't sleep. His dad comes up with an idea; he ties a long red thread around his big toe and leaves Jon the other end to hold on to while he sleeps. Now Jon can tug on the thread if he becomes frightened. Late in the night, Jon wakes with a start, following the thread, he finds that it doesn't lead to his father's bedroom, but down the hall, out the front door, and into what he fears the most; the darkness in the never ending forest behind the house.
Mumble the penguin has a problem: his son Erik, who is reluctant to dance, encounters The Mighty Sven, a penguin who can fly! Things get worse for Mumble when the world is shaken by powerful forces, causing him to brings together the penguin nations and their allies to set things right.
The movie is centered on a couple, Nader and Simin, and their 11-year-old daughter, Termeh. Nader and Simin are about to leave the country for good; however, Nader has a change of heart and decides to stay and look after his father who suffers from Alzheimer's disease.
There is a new criminal mastermind at large--Professor Moriarty--and not only is he Holmes’ intellectual equal, but his capacity for evil and lack of conscience may give him an advantage over the detective.