In the depths of his abandoned mansion, the corpse of Hiram Stokley is visited by his long-dead sweetheart, Cecily. Hiram learns that he can become young again and enter heaven if he performs a good deed within 24 hours. Upstairs, young Chuck Phillips and other heirs gather for the reading of Stokley's will at midnight. Unknown to them, Reginald Ripper, the executor of the estate, schemes to eliminate the others in order to keep the money for himself, with the help of his evil daughter Sinistra and others. Eric Von Zipper's motorcycle gang also gets caught up in the scheme. Everyone is brought together in Stokley's secret "chamber of horrors" beneath his mansion. Hiram and Cecily ultimately foil Ripper's plans and the wealth goes to the rightful heirs. Hiram receives his reward, becomes young again and enters heaven with Cecily.