The Puzzle

Egypt - The Mummy has found the first piece of the Puzzle of Horus.
Ardeth takes the piece out of Imhotep's hands, and narrowly escapes.
London - The Zephyr is parked, and Alex is playing inside with his friend Simon Montgomery. Simon doesn't know anything about Alex's adventures, other than that he's been gone with his parents a very long time.
When Simon asks about the Manacle, Alex says it's just something he found on one of his mom's digs.
Rick takes the boys home. He hints to Simon that it's time to go home for dinner, and tells Alex that he has chores to do. Simon hides behind the fence and watches. Alex uses the Manacle's powers to lift the trashcans, but drops them when Simon shows himself. Alex ends up telling him everything.
Evy is inside, looking through books. She is exhausted, and has gone through every lead she can think of. She doesn't know where to go from here.
Rick comes in with a telegram from Ardeth. He tells her they've found the Puzzle, and need to come to Egypt immediately.
The team - Alex, Rick, Evy, and Jonathon - board the Zephyr and begin the flight to Egypt. When they hit turbulence, one of the supply-closet doors is knocked open, and Simon falls into the room.
When they land, Simon and Jonathon stay in the ship, as Alex, Rick and Evy meet with Ardeth Bay.
Ardeth hands Alex the piece. Alex holds it near the Manacle and gets a vision - the location of the second piece! In the vision-flashback, he sees Horus's men hide the piece under a coverstone with the Symbol of Horus on it.
Imhotep, standing outside the Zephyr, sends a ball of fire at the ship. Simon and Jonathon - still inside - barely escape as the Zephyr is destroyed!
They find the second piece and fight Imhotep, only to find their ship in ruins. Alex puts the pieces together and receives a vision of the final piece's location.
They board a train, quickly followed by Imhotep and Colin.
Rick gives Alex the box that contains the Puzzle pieces, then stays to fight Imhotep alongside Ardeth, giving the others a chance to escape. Nobody knows it, but when they are looking away, Alex takes the pieces out of the box and slips them into his pockets.
The Mummy defeats Ardeth and Rick, then goes out in search of the others. Alex makes a big show of throwing the box out the window, scaring his mother.
Imhotep leaves and seals the doors shut. Another train is coming! Ardeth and Rick - back in action - help them escape through the roof and floor just before the other train crashes into the first one.
Imhotep finds the empty box, and is NOT happy at all.
The team takes off on camels. At the same time, Imhotep casts a spell that turns the sand into a sandworm, which attacks them.
The sandworm eats Alex and Simon! They are in its stomach, which does have an airhole that allows the sandworm to breath. Alex uses the Manacle to make Simon fly out of it, and then Ardeth uses his whip to grab hold of Alex and pull him out.
Jonathon has found the final Puzzle piece, and with Simon's help, the Puzzle is put together. It shows them a hologram of the Eiffel Tower in Paris. As they get closer, rdeth says, it will show them more detail, but now they know what city the Scrolls are in! As they fly away, the sandworm attacks Imhotep and Colin.

(text from tv.com)