After the destruction of the H.I.V.E. academy, Brother Blood and his minions rebuilt a fortress undersea and plans to create a giant cannon using Cyborg's blueprints to shoot the sea and flood the whole city. Aqualad quickly alerts the Titans of Blood's new scheme and the Titans take the T-Sub to stop Blood's newest plot. Unfortunatley, Blood's got some new tricks up his sleeve - and it's gonna be alot tougher for the Titans to stop him then they thought.