Shadow of the Brood is a 11 mission Zerg campaign about Radgar and his hunt for essence and effort to bring broodmother Kelysa back. The Broodmother Kelysa was killed by Amon's hybrids while they was trying to control zerg minds, she denied. Radgar was created from the essence of the Broodmother Kelysa. He was the only one who escaped. He thought he's alone, but that's not a true....one of the Kelysa's evolution masters will join him soon!