Irene Hart, a genius in aerospace engineering, gave up her research career to support her husband Garrett’s business after marriage. On her birthday, she caught him and their son celebrating the birthday of his female secretary Serena. Heartbroken, she joined a top-secret Mars program. Seven years later, as the chief engineer of the Phoenix probe, she achieves great success and chooses to be with Dr. Sean, who has always respected her. Garrett and their son are left with regret and finally let her go.