Warning: major spoilers for Seasons 4 and 5 of Supernatural follow, including Sam’s fate in the season finale.
Season 5 of Supernatural follows Sam and Dean Winchester as they try to stop the Apocalypse after Lucifer is released. The rings belonging to War, Famine, Pestilence, and Death provide a way to reopen Lucifer’s Cage, but the plan ultimately depends on Sam: he agrees to become the archangel’s vessel, briefly regains control of his body, and jumps into the prison with Michael. That is the core of the ending of “Swan Song,” Episode 22, which originally aired on May 13, 2010.
This recap organizes the events leading to that finale rather than retelling every standalone hunt across all 22 episodes. The sequence below follows cause and effect within the fifth season.
The Apocalypse begins with the Season 4 finale
In “Lucifer Rising” (4x22), Sam kills Lilith believing it will prevent Lucifer’s arrival. Ruby has manipulated him: Lilith’s death is actually the final seal that must be broken to free the archangel. Dean arrives too late to prevent it. This revelation explains both Sam’s guilt and the mistrust between the brothers at the start of the next season.
On the other side of the conflict, figures in Heaven’s hierarchy, including Zachariah, have also accepted bringing about the final confrontation. Season 5 is therefore not simply hunters versus demons: Sam and Dean must resist a destiny endorsed by forces in both Heaven and Hell.
Timeline: how the brothers reach the final confrontation
| Stage and episodes | Decisive event | Consequence for the Apocalypse |
|---|---|---|
| Opening, 5x01 to 5x02 | After Lucifer is freed, the brothers learn about plans to use human vessels. War makes a town’s residents attack one another; Sam and Dean take his ring. | The first Horseman is neutralized. The ring will acquire a larger purpose later. |
| Linked destinies, 5x03 to 5x08 | Lucifer identifies Sam as his true vessel. Dean is chosen for Michael, and Gabriel, previously known as the Trickster, reveals the connection between the two archangels and the Winchesters. | The fight appears to require one brother to accept Lucifer and the other Michael. |
| Failed attempt, 5x10 | Crowley supplies the Colt, but the gun cannot kill Lucifer. Jo and Ellen Harvelle die during the mission, while Lucifer performs a ritual to release Death. | The prospect of killing Lucifer directly collapses, and the human cost grows. |
| Famine’s threat, 5x14 | Famine magnifies compulsions and addictions, including Sam’s attraction to demon blood. Sam defeats the Horseman with his powers, and the group obtains a second ring. | They have two rings, but the power Sam must control remains a danger. |
| Heaven’s deadlock, 5x18 | Dean nearly accepts Michael but ultimately refuses. The angels turn to Adam, the Winchesters’ half-brother, and Dean kills Zachariah. | Michael has another potential vessel; Dean resists the role assigned to him. |
| Gabriel’s clue, 5x19 | Gabriel confronts Lucifer and dies. A message he leaves for the Winchesters reveals that the four rings are keys to Lucifer’s Cage. | The strategy changes from killing the archangel to imprisoning him again. |
| Final rings, 5x20 to 5x21 | Crowley helps track Pestilence and Death. Castiel takes Pestilence’s ring; Death gives his own to Dean because he also wants to escape Lucifer’s control. | The four rings can form the key, but the plan requires Sam to accept possession. |
| Swan Song, 5x22 | Sam offers himself to Lucifer. After losing control, memories connected to the Impala and Dean bring him back briefly. He opens the Cage and falls in with Michael, who inhabits Adam. | The apocalyptic battle is stopped. Dean survives losing his brother, and the final scene raises another question. |
The Four Horsemen and what each ring does
The Horsemen do not all meet the same fate. War, Famine, and Pestilence are neutralized when their rings are removed; Death makes a choice of his own. The effect of each Horseman should be kept separate from the four objects’ combined purpose.
| Horseman | Power and key episode | How the group obtains the ring |
|---|---|---|
| War | Distorts perception and incites violence among people who believe they are fighting demons. 5x02, “Good God, Y’All!”. | Sam and Dean disable him and take his ring. |
| Famine | Turns desires and addictions into destructive compulsions. 5x14, “My Bloody Valentine”. | Sam neutralizes Famine, and the team recovers the second ring. |
| Pestilence | Spreads disease and helps threaten the spread of the Croatoan virus. 5x21, “Two Minutes to Midnight”. | Castiel severs the finger bearing the ring and removes it. |
| Death | Embodies death itself and does not rely on the ring to exist or wield his power. He is summoned in 5x10 and meets Dean in 5x21. | He voluntarily gives Dean the fourth ring on the condition that Dean allow Sam’s plan. |
Why do Michael and Lucifer need Sam and Dean?
The show creates a mirror between two sets of brothers. Michael, loyal to their Father’s order, intends to fight the rebellious Lucifer. Sam is Lucifer’s intended vessel, while Dean is Michael’s preferred candidate. Gabriel spells out this parallel in “Changing Channels” (5x08), when he admits that he is an archangel.
Dean’s refusal does not remove the threat because Michael eventually uses Adam as a vessel. That is why Michael appears in the finale wearing the face of the Winchesters’ half-brother. Adam does not replace Sam: Michael occupies Adam, while Lucifer possesses Sam.
Why are the four rings not enough on their own?
Gabriel’s recorded message in “Hammer of the Gods” (5x19) explains that all four rings can open the Cage. But opening the prison and getting Lucifer inside are different problems. Lucifer knows he is being lured into a trap and takes control of Sam once Sam consents to become his vessel.
Death agrees to surrender the last ring because he wants to escape the binding Lucifer placed on him. In return, he demands that Dean let Sam carry out the plan even if it means losing him. Sam must drink demon blood to prepare the body Lucifer will inhabit. The rings provide an entrance; the human choice determines whether that entrance can be used.
Ending explained: Sam’s sacrifice in “Swan Song”
In Episode 5x22, the brothers travel to Detroit. Sam gives Lucifer his consent, hoping to regain control in time to enter the Cage. The first attempt fails: Lucifer controls his body, closes the opening Dean created, and heads toward the fated confrontation with Michael, who inhabits Adam.
Dean refuses to abandon his brother and drives the Impala to Stull Cemetery. Castiel tries to stop Michael and is destroyed by Lucifer; Bobby is also killed during the confrontation. As Lucifer beats Dean, a toy soldier Sam left in the Impala’s ashtray triggers memories of the life the brothers shared. Those memories, together with Dean’s determination to stay, enable Sam to take back control for a few moments.
Sam uses all four rings to reopen the Cage and throws himself into it. Michael tries to stop him and is dragged in as well. Sam’s sacrifice therefore prevents the archangels’ battle on Earth. It does not erase Sam’s part in breaking the final seal, but it gives him the decisive choice that stops the catastrophe.
Afterward, Castiel reappears, heals Dean, and resurrects Bobby, saying that God brought him back. Dean fulfills his promise to Sam by going to Lisa Braeden and sharing a home with her and Ben. Chuck finishes his narration and vanishes mysteriously; the episode itself does not definitively explain his disappearance.
What the final scene establishes, and what remains unresolved
The plan to trap Lucifer succeeds and the Apocalypse is stopped in that confrontation, but “Swan Song” does not resolve every question. The last scene shows someone who looks like Sam watching Dean at Lisa’s house. Season 5 itself does not explain how he appears there or the circumstances of his return. Explanations revealed in later seasons should not be mistaken for facts disclosed in this ending.
Sources and references
- Peacock: official Season 5 episode guide
- Prime Video: Season 5 catalog listing
- BuddyTV: Season 5 editorial episode guide
- Super-wiki: episode 4.22, Lucifer Rising
- Super-wiki: episode 5.02, Good God, Y’All
- Super-wiki: episode 5.10, Abandon All Hope...
- Super-wiki: episode 5.14, My Bloody Valentine
- Super-wiki: episode 5.18, Point of No Return
- Super-wiki: episode 5.19, Hammer of the Gods
- Super-wiki: episode 5.21, Two Minutes to Midnight
- Super-wiki: episode 5.22, Swan Song
- Hidden Remote: Season 5 finale recap
