Navah played the Earthworm in the stage adaption of Rohl Dahl's novel in a total of 6 shows at the Levin Little Theatre.

Dahl's tale is of an orphaned boy who escapes misery and domestic drudgery at the hands of his terrible aunts through an encounter with a mysterious magic tramp who sets into motion a chain of events resulting in an enormous peach inhabited (inside the hollowed-out stone) by a motley crew of overgrown insect characters. James joins the peach-dwellers, who become his friends, and when the fruit is released from its tree, it rolls away and ends up bobbing in the Atlantic.

Some hungry sharks get a bit curious, which results in a plan to tether the peach to hundreds of seagulls, which lift it up, carry it the rest of the way across the ocean, via a trippy encounter with some cloud creatures, and it ends up impaled on the spire of New York's Empire State Building before becoming a major tourist attraction.

Navah did a superb job, and received this review from Sadie Beckman from the Horowhenua Chronicle,

"Some great comic timing and the ability to make himself the butt of the joke meant Navah Chapman's Earthworm, resplendent in pink puffer jacket and beanie, was a favourite with the audience, next to the lead role of James."