Submarine (1928) — AI Story Visualization

Plot Analysis Summary

A Navy friendship survives danger, separation, betrayal, and guilt through a final act of selfless rescue.

Story Structure — 5 Plot Phases

Bomb Beneath The Harbor

Jack Dorgan and Bob Mason work dangerous naval duties in a foreign port. Bob Mason proves his loyalty by saving Jack Dorgan from a live bomb.

Key Events

• Hazardous Harbor Duty — Jack Dorgan and Bob Mason perform dangerous harbor dredging as close Navy pals. Characters: Jack Dorgan, Bob Mason Location: A foreign port in China
• Port Night Brawl — A night of jazz and drinking ends in a brawl that the two sailors win. Characters: Jack Dorgan, Bob Mason Location: A foreign-port nightlife district
• Dangerous Demolition Job — Jack Dorgan undertakes a hazardous underwater demolition operation. Characters: Jack Dorgan, Bob Mason Location: Underwater harbor worksite
• Jack Becomes Entangled — Jack Dorgan becomes trapped in a rope tethered to a live bomb. Characters: Jack Dorgan, Bob Mason Location: The underwater demolition site
• Bob's Underwater Rescue — Bob Mason dives into danger, frees Jack Dorgan, and escapes before the bomb detonates. Characters: Jack Dorgan, Bob Mason Location: The underwater demolition site

Marriage Against The Current

Separated by naval assignments, Jack Dorgan enters a marriage after meeting someone in San Diego. His wish for domestic calm soon clashes with a continuing attraction to nightlife.

Key Events

• Separate Naval Assignments — Bob Mason transfers to submarine duty while Jack Dorgan is sent to San Diego. Characters: Jack Dorgan, Bob Mason Location: A foreign naval station
• Jack Enters Dance Hall — Lonely and restless, Jack Dorgan enters a dance hall and begins a new personal chapter. Characters: Jack Dorgan Location: A San Diego dance hall
• Impulsive Marriage — Jack Dorgan is swept into an impulsive marriage that soon conflicts with his desire for quiet domestic life. Characters: Jack Dorgan Location: San Diego
• Domestic Discontent — Jack Dorgan wants settled married life while his spouse continues to prefer nightlife. Characters: Jack Dorgan Location: Jack Dorgan's home
• Jack Leaves On Mission — Jack Dorgan leaves home for a salvage mission, creating an opening for renewed nightlife and secrecy. Characters: Jack Dorgan Location: A maritime salvage site

Friendship Under Suspicion

Bob Mason arrives with a submarine squadron and begins an affair without knowing the woman's marriage. Jack Dorgan discovers the situation and mistakes Bob Mason's conduct for deliberate betrayal.

Key Events

• Bob Returns With Squadron — Bob Mason arrives with a submarine squadron and enters the same dance-hall world. Characters: Bob Mason Location: A foreign port
• Bob Begins Affair — Believing Jack Dorgan's spouse to be unmarried, Bob Mason begins a sudden romantic affair. Characters: Bob Mason Location: A foreign-port dance hall
• Jack Introduces His Wife — Jack Dorgan returns and proudly prepares to introduce Bob Mason to his wife. Characters: Jack Dorgan, Bob Mason Location: Jack Dorgan's home
• The Marriage Revealed — Bob Mason realizes that the woman he pursued is Jack Dorgan's wife. Characters: Jack Dorgan, Bob Mason Location: Jack Dorgan's home
• Jack Misreads The Embrace — Jack Dorgan returns unexpectedly, sees Bob Mason embracing his wife, and assumes betrayal. Characters: Jack Dorgan, Bob Mason Location: Jack Dorgan's home
• Friendship Breaks — Jack Dorgan throws Bob Mason out and withdraws into silence and bitterness. Characters: Jack Dorgan, Bob Mason Location: Jack Dorgan's home

The Abyss Calls

Bob Mason becomes trapped after his submarine sinks. Jack Dorgan must confront his resentment and accept the dangerous descent only he can make.

Key Events

• Submarine Sinks — Bob Mason's submarine sinks, trapping him and the crew under crushing pressure. Characters: Bob Mason Location: Deep sea
• Jack Learns Bob Is Trapped — Jack Dorgan learns that Bob Mason is trapped and is the only diver capable of reaching the submarine. Characters: Jack Dorgan, Bob Mason Location: The submarine rescue site
• Jack Chooses The Descent — After learning the truth about the affair, Jack Dorgan overcomes bitterness and prepares to rescue Bob Mason. Characters: Jack Dorgan, Bob Mason Location: The submarine crash site
• Morse Code Contact — Jack Dorgan taps Morse code on the hull to ask whether Bob Mason is alive. Characters: Jack Dorgan, Bob Mason Location: Outside the sunken submarine

Oxygen In The Darkness

Jack Dorgan contacts the trapped submarine, survives Bob Mason's despair, and connects the oxygen lines. Their friendship is restored after the rescue.

Key Events

• Morse Code Contact — Jack Dorgan taps Morse code on the hull to ask whether Bob Mason is alive. Characters: Jack Dorgan, Bob Mason Location: Outside the sunken submarine
• Bob Attempts Suicide — Fearing Jack Dorgan may not rescue him, Bob Mason attempts suicide but is stopped by his shipmates. Characters: Bob Mason Location: Inside the sunken submarine
• The Crew Answers — The submarine's occupants answer truthfully that everyone is alive. Characters: Jack Dorgan, Bob Mason Location: The sunken submarine
• Oxygen Lines Connected — Jack Dorgan connects the oxygen lines, restoring the trapped crew's chance of survival. Characters: Jack Dorgan, Bob Mason Location: The sunken submarine
• Friendship Restored — Months later, Jack Dorgan and Bob Mason walk together again with their bond renewed. Characters: Jack Dorgan, Bob Mason Location: A foreign port

Story Breakdown

• Navy Companionship — Jack Dorgan and Bob Mason begin as close Navy pals whose loyalty is tested by hazardous duty.
  • Harbor Dredging — The two petty officers perform dangerous work in a foreign port.
  • Nighttime Adventure — Their port leisure leads to jazz, drinking, flirtation, and a brawl.
• Bomb Rescue — An underwater demolition job turns their friendship into a life-saving bond.
  • Entangled Diver — Jack Dorgan becomes trapped by a rope attached to a live bomb.
  • Seconds To Escape — Bob Mason frees Jack Dorgan before the explosive detonates.
• Marriage Strain — Separation and conflicting expectations destabilize Jack Dorgan's impulsive marriage.
  • San Diego Transfer — Jack Dorgan is sent to San Diego while Bob Mason transfers to submarine duty.
  • Domestic Conflict — Jack Dorgan seeks quiet married life while nightlife remains a powerful attraction.
• Affair And Discovery — Bob Mason unknowingly enters a relationship that connects directly to Jack Dorgan's marriage.
  • Dance Hall Meeting — Bob Mason meets Jack Dorgan's spouse while believing she is single.
  • Unexpected Revelation — Bob Mason discovers the marriage when Jack Dorgan prepares an introduction.
• Broken Brotherhood — A misunderstood embrace causes Jack Dorgan to believe his closest friend has betrayed him.
  • Mistaken Betrayal — Jack Dorgan sees the situation without understanding the full truth.
  • Bitter Withdrawal — Jack Dorgan throws Bob Mason out and retreats into silence.
• Submarine Crisis — Bob Mason's submarine disaster forces Jack Dorgan to choose between resentment and rescue.
  • Deep Sea Accident — Bob Mason becomes trapped inside a sunken submarine under crushing pressure.
  • Only Diver Capable — Jack Dorgan is the only diver able to reach the wreck.
• Redemptive Descent — Jack Dorgan overcomes bitterness and risks his life to save Bob Mason and the trapped crew.
  • Morse Code Contact — Jack Dorgan taps the submarine hull to determine whether Bob Mason is alive.
  • Oxygen Rescue — Jack Dorgan connects the oxygen lines and saves the submarine's occupants.
• Renewed Friendship — After the rescue, Jack Dorgan and Bob Mason walk together again with their bond restored.
  • Survival — The trapped sailors survive the failed submarine and rescue ordeal.
  • Future Adventures — The two friends resume their shared life with renewed loyalty.

Directed by

Frank Capra

Key Cast

• Jack Holt — Jack Dorgan
• Dorothy Revier — Bessie, Mrs. Jack Dorgan
• Ralph Graves — Bob Mason
• Clarence Burton — Submarine Commander
• Arthur Rankin — The Boy