Beyond the Poseidon Adventure (original plot)

After the release of The Poseidon Adventure, Irwin Allen had conceived of a sequel that was different than the final product.

Plot
Unlike the actual sequel, the original plot would have been about the survivors being trapped in a crashed tunnel train while heading to testify the disaster. Following the crash, the survivors must find an escape.

Why It Was Cancelled

 * 1) It would have been impossible to make a movie without the Poseidon.

Results

 * The script was rewritten.
 * The actual sequel would ￼receive negative reviews from critics and audiences. And
 * 1) film was a box office disaster.
 * Elements of the original plot would end up in the 1996 film Daylight with Sylvester Stallone.