The show follows the girl Ísafold who one day runs into Blámi, a boy from a distant star, who is stranded on Earth because his space ship broke down.
Ísafold decides to help Blámi look for the treasure, and throughout the series they chase down different leads to the trove.
Ísafold and Blámi were both played by adults; Kristjana Pálsdóttir and Sigurþór Albert Heimisson respectively.
Among other players are Kristbjörg Kjeld, Árni Tryggvason and Ólafía Hrönn Jónsdóttir.
A children's book written by Sigrún Eldjárn, bearing the same name, and following the same storyline, was published at the time of the show's first airing in 1991.