Seven years after helping to rescue RKO Radio from bankruptcy as the heroine of King Kong, Fay Wray returned to the studio as star of the modest programmer Wildcat Bus. Wray is cast as Ted Dawson, whose father Charlie (Oscar O'Shea) runs a lucrative bus line. Before long, however, the Dawsons' livelihood is threatened by a wildcat bussing firm that isn't above sabotaging its competition. Charles Lang plays impoverished playboy Jerry Walters, who unwittingly goes to work for the crooked bus firm before switching allegiance to the Dawsons. The sight of the beauteous Fay Wray dressed as a garage mechanic is the principal redeeming factor of Wildcat Bus.