Batman & Mr. Freeze: SubZero

Batman amp Mr. Freeze SubZero is a 1998 directtovideo superhero animated feature film, the second based on Batman The Animated Series, serving as a standalone sequel to Batman Mask of the Phantasm. It won the Annie Award for Best Home Video Animation, and was produced by Warner Bros. Animation.

Since his last encounter against Batman, Mr. Freeze has found a home in the Arctic and started a family of sorts with the still cryogenicallyencased Nora, an Inuit boy named Kunac, and two pet polar bears, Hotchka and Shaka. Noras condition begins to rapidly deteriorate due to a submarine accidentally emerging from underwater directly underneath them, shattering her containment vessel. Freeze returns to Gotham City with his companions. He enlists the help of Dr. Gregory Belson to find a cure. Belson determines that Nora needs an organ transplant, but due to her rare blood type there are no suitable donors available.Freeze declares that they will use a live donor, even if it means the donor will die in the process. Belson is at first reluctant to kill an innocent girl, but Freeze bribes him with a gold nugget and even more gold from an entire vein in the Arctic that will put an end to Belsons financial problems. Barbara Gordon Batgirl is a perfect match, and Freeze learns from her roommate that she is at a restaurant with her boyfriend, Dick Grayson Robin. Freeze attacks the restaurant and kidnaps Barbara, taking her to an abandoned oil rig where he and Belson are hiding. Freeze and Belson explain the situation to Barbara, who claims that she is willing to help Nora for the blood transfusion, but not at the oil rig, prompting Freeze to keep Barbara imprisoned. When the time for the operation comes, Barbara realizes that they are lying when they say she will need to be put under for a mere transfusion. She escapes with the help of Kunac. Belson gives pursuit and almost catches her, before the arrival of Batman and Robin. ........

Source: Wikipedia