Story Structure — 4 Plot Phases
Segregated Beginnings
Katherine, Mary, and Dorothy navigate the racially segregated West Area computing unit at Langley. Vivian Mitchell assigns Katherine to the Space Task Group while Mary faces institutional barriers for engineering advancement.
Key Events
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West Area Assignment — Segregated computers perform mathematical calculations Characters: Dorothy Vaughan, Mary Jackson
Location: Langley Research Center
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Harrison's Assignment — Katherine assigned to assist Harrison Characters: Al Harrison, Vivian Mitchell
Location: Space Task Group Office
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Heat Shield Discovery — Mary identifies critical design flaw Characters: Mary Jackson, Karl Zielinski
Location: Heat Shield Team Lab
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Court Petition — Mary wins permission for night classes Characters: Mary Jackson, Judge
Location: Hampton High School Court
Breaking Barriers
Mary petitions the court to attend night classes, winning a pivotal legal victory. Katherine confronts Al Harrison about restroom segregation, prompting him to dismantle the discriminatory signs.
Key Events
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Court Petition — Mary wins permission for night classes Characters: Mary Jackson, Judge
Location: Hampton High School Court
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Restroom Confrontation — Katherine explains segregation, Harrison destroys signs Characters: Al Harrison
Location: Langley Hallway
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IBM Threat — Dorothy learns IBM threatens human computers Characters: Dorothy Vaughan, Vivian Mitchell
Location: West Area Office
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Fortran Learning — Dorothy teaches team programming Characters: Dorothy Vaughan
Location: Library and Computer Room
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Supervisor Promotion — Dorothy promoted, demands 30 transfers Characters: Dorothy Vaughan, Vivian Mitchell
Location: NASA Office
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Equation Solution — Katherine solves complex equation Characters: Al Harrison, Paul Stafford
Location: Space Task Group Meeting
The IBM Challenge
Dorothy discovers the IBM 7090 threatens human computers and secretly learns Fortran to train her team. She secures a supervisor promotion by demanding the transfer of thirty colleagues.
Key Events
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Equation Solution — Katherine solves complex equation Characters: Al Harrison, Paul Stafford
Location: Space Task Group Meeting
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Credit Dispute — Stafford credits work solely to himself Characters: Paul Stafford
Location: Report Office
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Glenn's Visit — Glenn greets the women Characters: John Glenn
Location: Langley Grounds
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Launch Preparation — Final arrangements for Friendship 7 Characters: Al Harrison
Location: Launch Facility
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Reassignment — Katherine reassigned to West Area Location: West Area Office
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Wedding — Katherine marries Jim Characters: Jim Johnson
Location: Chapel
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Calculation Discrepancy — IBM calculations show discrepancies Characters: Al Harrison
Location: Control Room
Orbit and Triumph
During John Glenn's launch, IBM calculations fail. Katherine manually verifies the coordinates, guiding Mission Control to a safe landing decision. The trio achieves historic professional recognition.
Key Events
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Calculation Discrepancy — IBM calculations show discrepancies Characters: Al Harrison
Location: Control Room
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Manual Verification — Katherine checks landing coordinates manually Characters: Al Harrison
Location: Control Room
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Heat Shield Warning — Warning indicates loose heat shield Characters: Al Harrison
Location: Control Room
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Landing Decision — Decision to land after three orbits Characters: Al Harrison
Location: Control Room
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Successful Landing — Friendship 7 lands safely Characters: John Glenn
Location: Atlantic Ocean
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Epilogue Mary — Mary becomes first female African American engineer Characters: Mary Jackson
Location: NASA
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Epilogue Dorothy — Dorothy continues as first African American supervisor Characters: Dorothy Vaughan
Location: NASA
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Epilogue Katherine — Katherine performs Apollo/Shuttle calculations, receives Medal Location: NASA
The untold story of Katherine G. Johnson, Dorothy Vaughan and Mary Jackson – brilliant African-American women working at NASA and serving as the brains behind one of the greatest operations in history – the launch of astronaut John Glenn into orbit. The visionary trio crossed all gender and race lines to inspire generations to dream big.