Zappy and the Holy Grail

Gigel, Zapy's twin brother, is engulfed in jealousy and steals the most valuable thing that Zappy has ... The Holy Grail!
Without regrets, Gigel manages to flee unnoticed, hiding in his evil castle.
A few hours later, Zappy gets home and notices the lack of the Holy Grail, but to his luck, by Gigel's incompetence, he notices some clues that help him discover the real perpetrator. Zappy knows that Gigel has stolen the Holy Grail, so he starts in an adventure where danger perceives him every step.
Help Zappy recover his Holy Grail!