Dante Vale is away on a trip to China, so Lok Lambert is left in charge of the team. On a mission to take down the wild Titan, Antedeluvian, the team head to Vlad Dracul's Castle in Romania. With their back-up missing, the team charge right in and face Harrison, who is growing stronger. After realizing that Tantras inntends to harness the power of the Heart of Vlad Dracul and activate the Spiral Mark. Determined to stop him, Lok, Sophie Casterwill, Den Fears and Cherit battle against Harrison's secret weapon: Powerbonded Antedeluvian.