A man is sentenced to prison for a murder he did not commit. Thanks to a serum invented by his brother, he manages to become invisible and escape from prison in order to prove his innocence, while his brother works feverishly to find an antidote.
Two fairies, Terencja and Felicja are in posession of the Lucky Rain Boots, which they intend to give to the most deserving person in the city of Kraków.
Teenagers from a small town and their high school science teacher join forces to battle a giant mutant spider, living in a cave nearby and getting hungry.