Year after year Iran and its eastern neighbor Turan battle for supremacy over the region. Afrasiyab, Iran’s formidable enemy, organizes a night attack against the Persian forces as revenge for Iran’s invasion of Turan. When the Persians fall asleep after an evening of drinking and merry-making, Afrasiyab’s men descend on them “like a black cloud.” Most of the soldiers, sleeping under a tent, are surprised in the night attack and killed.