It took five years to reassemble the cast for this third outing for the exhibits that magically come to life in their museum at night. This time, though, their days seem numbered. The tablet of "Ahkmenrah" (Rami Malek) is starting to lose it's powers and so unless "Daley" (Ben Stiller) can find some way of reinvigorating it, his friends will revert to their plastic and papier-mâché forms for ever. This means that he has to convince "McPhee" (Ricky Gervais) - who is, himself, facing redundancy to let them travel to the British Museum where it might be possible for the young Pharaoh to talk to h...