There is a belief in Thailand which requires relatives to put coins inside the mouth of the deceased so that they can move on to the afterlife. However, there is a group of reckless and irresponsible teenagers who keep stealing the gold coins from the deceased. Consumed by their own greed, the teenagers then set out to steal from a millionaire's corpse who had a mouthful of gold coins and their action somehow angers the dead man. Later, the group of teenagers then encounter various horrifying situations as the spirits of the man returns to haunt them.
When the magic powers of The Tablet of Ahkmenrah begin to die out, Larry Daley (Ben Stiller) spans the globe, uniting favorite and new characters while embarking on an epic quest to save the magic before it is gone forever.
Based on the real life story of legendary cryptanalyst Alan Turing, the film portrays the nail-biting race against time by Turing and his brilliant team of code-breakers at Britain's top-secret Government Code and Cypher School at Bletchley Park, during the darkest days of World War II.