Henri Charrière is a
safecracker nicknamed "Papillon" because of the butterfly tattoo on his chest. In
France, he is wrongly convicted of murdering a
pimp in 1933 and is sentenced to life imprisonment in
French Guiana. En route, he meets a fellow convict,
Louis Dega, an infamous forger and embezzler. Papillon offers to protect Dega if he will fund the former's escape once they reach Guiana. Enduring the horrors of life in a jungle
labour camp, the two become friends. One day, Papillon defends Dega from a sadistic guard and escapes into the jungle but is captured and sentenced to two years in
solitary confinement. In gratitude, Dega has extra food smuggled to Papillon. When the smuggling is discovered, the warden screens Papillon's cell in darkness for six months and halves his rations, but Papillon refuses to give up Dega's name. He is eventually released and sent to the infirmary in
St-Laurent-du-Maroni to recover. Papillon sees Dega again and asks him to arrange for another escape attempt. Dega helps him meet an inmate doctor who offers to secure a boat on the outside with the help of a man named Pascal. Fellow prisoner Clusiot and a gay orderly named
André Maturette join the escape plot. During the escape, Clusiot is knocked unconscious by a guard. Dega subdues the guard and reluctantly joins Papillon and Maturette, climbing the walls to the outside. The trio meet Pascal, and they escape into the night. In the jungle the next day, Pascal delivers the prisoners to their boat, but after he leaves, the convicts discover it is fake. They encounter a local trapper who has killed the bounty hunters waiting for them. He guides the three to a
leper colony, where they obtain supplies and a seaworthy boat. The trio lands in
Colombia and are accosted by a group of soldiers, who wound Maturette. He is captured along with Dega, while Papillon evades the soldiers and lives for a long period with a native tribe. He awakens one morning to find them gone, leaving him with a small sack of pearls. Papillon pays a nun to take him to her
convent, where he asks the
Mother Superior for refuge, but instead, she turns him over to the authorities. Papillon is returned to French Guiana and sentenced to another five years of solitary confinement. He emerges a graying old man, along with Maturette, whom he sees just before the latter dies. Papillon is moved to the remote
Devil's Island, where he reunites with Dega, now a farmer who has long given up hope of being released. From a high cliff, Papillon observes a cove where he realizes the waves are powerful enough to carry a man out to sea and to the nearby mainland. Papillon persuades Dega to join him in another escape, and the men make two floats from bagged-up coconuts. Dega then decides not to escape and begs Papillon not to either. Papillon embraces Dega, then leaps from the cliff and is carried out to sea. A narrator states that Papillon lived the rest of his life a free man, while the prison was closed some time before he died and ultimately reclaimed by nature. == Cast ==