While out fishing, Xros Heart meets a female Digimon Hunter Mizuki and her partner Submarimon. Explaining her story, Mizuki is treasure hunter who heard of a treasure within sunken ship under Tokyo's waters. However, to defend the beautiful sea, and to obtain riches, she became a Digimon Hunter to deal with Dragomon (who is also pursuing a Plesiomon). Asking for Tagiru's help, Mizuki leads Xros Heart to Dragomon's location as he is also searching for something valuable. Tagiru helps to capture Dragomon while Mizuki manages to capture Plesiomon.
Release date: 12 February 2012