[5] Kalinke and Mitchell summarise the saga thus: The saga relates the fortunes of Jón, a young farmer, who has the gift not only of interpreting dreams, but of divining the dreams of others before they are told.
Earl Heinrekr of Saxland, who also interprets dreams, envies Jon's superior ability.
The earl's treachery comes to light when his brother-in-law, the emperor of Saxland, arrives seeking interpretation of an unusual dream.
Subsequently, the earl is banished, while Jón receives the earldom and weds Ingibjǫrg.
All appear to derive independently from an earlier version of the saga, as do many of the later manuscripts.