What happens in The Plan?
Spoilers for this episode and earlier events.
Ubbe’s new alliance turns the conflict between brothers into part of Kattegat’s struggle over rule. Bjorn’s claim to be a trader opens a different encounter with power from the raids that made his family famous. The Saxons find horses and rats in York’s chapel, leaving an apparent victory with unsettling physical clues.
- Season & episode
- Season 5, episode 4 of 20
- Series order
- 53 of 89
Story connections: Ubbe, Lagertha, Bjorn Ironside and Ivar the Boneless.
Identify a face in this episode.
Episode references: HISTORY season guide · Community episode record.

Key events and consequences
Ubbe's alliance with Lagertha connects a dispute over York's leadership to the coming contest for Kattegat. The Saxons' apparent entry into an abandoned city offers success without certainty: the physical clues make absence itself suspicious. Bjorn meanwhile presents himself as a trader, testing a role less direct than conquest.
- Ubbe’s new alliance turns the conflict between brothers into part of Kattegat’s struggle over rule.
- Bjorn’s claim to be a trader opens a different encounter with power from the raids that made his family famous.
- The Saxons find horses and rats in York’s chapel, leaving an apparent victory with unsettling physical clues.
Key characters

Ubbe
Ubbe’s new alliance turns the conflict between brothers into part of Kattegat’s struggle over rule.
Character story
Lagertha
Character story
Bjorn Ironside
Bjorn’s claim to be a trader opens a different encounter with power from the raids that made his family famous.
Character story
Ivar the Boneless
Character story
Astrid
Character storyVik
Character story
Euphemius
Character storyLocations and story geography
Kattegat
Ubbe's return adds another son of Ragnar to Lagertha's side of the developing conflict.
York
The apparently deserted streets invite an occupation whose safety the Saxons have not established.
Sicily
Bjorn enters Euphemius's service through an encounter framed as trade rather than a conventional raid.
These are places in the story. For the real landscapes used on screen, explore the filming-location guide.
The episode breakdown
This is an episode about appearances under pressure. Bjorn needs a host to see a visitor rather than an invader; the Saxons need to decide whether an empty city means their strategy has worked. In each case, interpretation becomes a tactical risk. Watch what the characters know and what they merely assume. The final image rewards attention to an ordinary detail rather than a grand declaration: evidence can contradict a victorious story before the people telling it recognize the contradiction.
Themes to follow
- Empty space can conceal an opponent’s continuing power
- Travel depends on the identity a host accepts