(synopsis credited to Ninjaturtles.com)
While the other Turtles go off to the local Planetarium to see O'Malley's comet, Michaelangelo goes off to the Natural History Museum with April O'Neil for the unveiling of the mummy of Ahmed Turt-el. At the front door, April and Michaelangelo are warned of the ancient curse by an Egyptologist, Sir Percival and his man servant Casbah. April and Michaelangelo pay them no mind and enter the Museum.
No sooner is the sarcophogus opened, when the lights go out. The ghost of Osiris is revealed and a precious ruby, the Turtle's Eye, is stolen from the tomb -- along with April.
While Michaelangelo unsuccessfully tries to contact the other Turtles, April is delivered to Sir Percival's home, which is a replica of the Sphinx on the site of the old World's Fair. Here Percival details his plan to harness the power of O'Malley's Coment with the Turtle's Eye Ruby. He plans to use the gem as a ray magnifier, which he will use to ""rule the world"" and make April h