How to survive the monster in the basement?

Little Spirou is playing a soccer match with his friends. But Virgil kicks the ball through the basement window of a house which looks like it’s haunted! Scared stiff, Spirou, Virgil and Cassius go to try and get their ball back, one dressed in armour, and another disguised as a monster to scare the creature which is shrieking so horribly down in the basement… But maybe the monster is not so terrible and all the drama is a big fuss about nothing!