S1·E14 Ganesh's Beheading

Mahadev is forced to unleash his wrath upon Ganesh as the naive son of Parvati is refusing to let his guard down and let the disciples of Mahadev inside. After Ganesh makes the mistake of attacking Brahma and Vishnu, Mahadev decides to end it all for Ganesh. After the cataclysmic event comes to an end, Mahadev and the Gods realise that Ganesh was Parvati's son.