Black Jack is alive because his mother, Mio's pendant stopped the bullet from hitting him. He operates on the doctor's mother and discovers a Type Hydra artificial heart. It is a heart that keeps on pumping even when it is extracted from the host. They replaced the Type Hydra with another artificial heart that Black Jack requested and saved her life. They discover that the Type Hydra was designed by Hazama Kagemitsu, Black Jack's father through a microfiche that was inside Mio's pendant. The doctor's mother tells Black Jack how his parents met and how she got the artificial heart.
銃弾が母の形見のペンダントにめり込み、死なずにすんだブラック・ジャックは病院へ行き、キャサリンの手術を行う。だが、ブラック・ジャックはキャサリンの心臓を見て手術を中断する。
Black Jack, que sobrevivió a la bala alojada en el colgante de recuerdo de su madre, va al hospital para operar a Catherine. Sin embargo, Black Jack detiene la operación cuando ve el corazón de Catherine.
