 After Monsley freed Conan and revealed to him that Lepka is planning to flood the underground city of Industria. Conan escapes through a window and goes down the Triangle Tower. When he made it to the underground tunnels, he found a bomb and managed to defuse it, but soon found other bombs that are about to go off. And then they all exploded and waves of water came in and swept Conan away. Lana, Dyce, Jimsy, Luke, and the rebels noticed the water coming in. They already can tell that Lepka is planning to drown them. With all the exits caved in, the main center of the underground city remained the only accurate exit. But Lepka used the announcing speaker to inform them that they will all drown unless Lana comes force and guarantees for their lives. Luke and Dyce told her that there s no proof whether Lepka will keep that promise. But Lana did as he announced and came to the exit, as she doesn t want the people to suffer. But after she came up, Lepka shut the exit shut. Lana was angry at Lepka for not keeping his word, he told her that he has kept his word and will spare their lives unless Lana gets her grandfather to co-operate. She was brought to the torturing chamber to find Dr. Lao still strapped on a table. Lana soon discovered that her grandfather has became deaf, and unable to see well. She felt awful for him, but he was able to communicate with her by ESP. And that cheered her up and used her thoughts to describe that High Harbor is safe and everyone is living peacefully that. Dr. Lao was relieved to sense that telepathically. Lepka couldn t believe what he s seeing, that his key to Solar Energy can t even hear or see him. Meanwhile Conan searched around the flooded caverns. He couldn t find his way well, but was soon met by Luke s Father(who resembles his grandfather) and tells him that he and Luke s men are creating an alternate route to the control room that has the power to open the exits. Soon Conan is met up with Dyce and Jimsy, and decides to find the way to the control room with the help of Dyce and Jimsy.