Unchain My Heart, Part 1.Two children in China named Chi Chu and Bing are shown opening a mysterious coffin. An anthropomorphic skeleton rises from the coffin, at which time Chi Chu pours a magical elixir onto the skeleton to give it the form of a human woman. It is revealed that the children are her associates (and are actually 1,200 years old), and that she is a 2,000 year old vampire named "Vam-Mi". She was defeated 17 years ago by Venus's former master Chung I, at which time he removed her heart and stored it in a wooden box while she was locked away in a coffin. She reveals that she needs to find her heart and put it back in place within four days, otherwise she will lose her human illusion will die once and for all. When Bing informs her that Venus (along with the ancient box containing her heart) is now in America, they travel to New York City on a mission to recover her missing heart from Venus. While Bonesteel is trying to ambush the Turtles, Vam-Mi & Co. appear and attack Venus. The Turtles escape, and Venus discovers that the mysterious dried herb in her antique wooden box has now turned into a beating heart.