Cereal Hero

One by one, the brave democracies of Europe have been crushed under the Nazi heel. Only Britain remains to stem the tide of fascism. (Meanwhile) In a hidden cave, on the outskirts of Hudson, Ind., gather the Knights of the Flaming Sword, an evil group in league with the Nazis. . . .

That’s how an onscreen radio announcement will introduce the feature-film saga of “Jack Armstrong, the All-American Boy,” set for production in August. It’s based on the heroic teen-age radio show character, whose Wheaties-sponsored exploits were on the airwaves from the ‘30s through the early ‘50s.

Exec producer Burrell Cohen, who optioned the rights from General Mills, plans a trilogy, calling Jack “a kind of teen-age Indy Jones, set around historic events,” that could have multi-generational appeal.

The first installment, “The Serpent’s Ring in the Pyramid of the Sun,” set in 1939, will find Jack and his handsome Uncle Jim attempting to thwart a Nazi plot to assassinate President Franklin D. Roosevelt.

Budgeted at $14 million and independently financed, shooting will take place at the real-life Pyramid of the Sun outside Mexico City and on locations in Indiana and New York. Allyn Freeman scripts.

No director is yet signed, but casting has begun.