When Scarab focuses all the powers of his magic at Rapses, in the hopes of obtaining the Spirit of Pharaoh, an explosive separation occurs instead. When the smoke clears, Presley finds himself in 1525BC Egypt, being attended to by princely servants, while the personality of Rapses, with all of its royal pretensions, finds himself in the body of a 20th century American seventh grader. The Mummies have to get things back to normal before the haughty prince gives them all away to Scarab. All four Mummies must reverse the separation of Presley/Rapses.