According to Variety, Warner Bros. Pictures has bought the film rights to Rick Yancey's young-adult novel The Extraordinary Adventures of Alfred Kropp and set it up with Akiva Goldsman's Weed Road Pictures.

Scribe David Iserson ("Saturday Night Live") is attached to adapt.

The story concerns an awkward 15-year-old who gets plunged into an Arthurian adventure when his uncle convinces him to steal an ancient sword that turns out be Excalibur.

Producers are Goldsman and 3 Arts Entertainment's Erwin Stoff.

Yancey's book, published by Bloomsbury USA Children's Books, hit the stands in early October.