Genius aerospace engineer Irene Hart gave up her scientific‑research career to support her husband Garrett’s business venture after marriage, stepping back into domestic life. Years later, she faced coldness from her husband and estrangement from their son. On her birthday, she witnessed the two celebrating her husband’s female secretary’s birthday, which broke her heart completely. She filed for divorce and joined the top‑secret Phoenix Mars Mission, cutting off all social ties. Seven years on, she rose to fame as chief engineer and built a life alongside Dr. Sean, who had always respected her. Her ex‑husband and son were left to learn to let go, haunted by regret.