It is 9th hijri - the Northern Arabian Christian Ghassanid empire have teamed up with 40,000 Roman soldiers to attack the Muslims and the Prophet PBUH orders every able bodied man to prepare themselves to go out and meet this threat.

The battle of Tabuk series covers this expedition and episode 1 explores the story of Ka'ab Ibn Malik RA who was a sincere Muslim who just did not go and his punishment thereafter from Allah and the Prophet PBUH!