"Billy and Manny know exactly what Sure Things, Inc.'s next big thing will be - a hovercraft! But when they start to build it, they notice it's a little...haywire. The hovercraft dips, dives, twirls, and spins, until one day, it's gone entirely, and so is Emily! Can Billy find his sister and fix the hovercraft, or will this be a crash landing for Sure Things, Inc.?"--Jacket.
Series:
Billy Sure, kid entrepreneur ; 7 Sharpe, Luke. Billy Sure, kid entrepreneur (Series) ; 7.
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