Leif Olsson, Lillan and Ivar's father, comes to the castle and claims to be a ghost exterminator. In fact, his intention is to prevent any real ghost executor from accessing his old friends Jean and Staffan.
Lillan (Olsson), Saga, Benny, Frans and Dioda go out into space to clear away the space junk and help Santa. Down on earth, the whole Olsson family comes to visit Greveholm
Saga, Benny and Frans go down to the caves under Greveholm on behalf of Dioda to stop the count and prevent him from finding all the "ggä" (as Dioda calls them). Above ground, Stig becomes jealous of Leif who is admired by Kicki.
Saga, Benny and Frans try to figure out how to get across the lake to catch up with the Count and save Dioda's gag. Leif demonstrates the skeleton trap. Stig does not think it works and decides to try it for himself
Saga, Benny and Frans are stuck in the cave while the Count escapes with Dioda's eggs. Stig thinks he has proof that Leif is a scam, but the question is. Can ghosts get caught on film. Everything is put on its head when Leif's wife enters.
A rocket from space lands in front of the castle. Dioda and her servants have come to get their eggs. The Count proposes to Dioda again. Kicki and Stig keep the ghosts Jean and Staffan trapped in a refrigerator.
On Lucia, Jean and Staffan try to scare the family away so that they do not fall for the Count. No one gets scared - instead, Kicki decides to advertise for ghost hunters
Saga, Benny and Frans follow in the footsteps of the skeleton count and discover a great secret. Leif shows Stig his latest ghost equipment which consists of two vacuum cleaners