Marta did it and gets back to breathing, her lung transplant was successful. When she awakens Gabriele is next to her, and together they decide to go and live in a completely new house, just for them. Orphans of Marta's extravagance, Jacopo and Federica thus dedicate themselves to finding new roommates. Everything seems to be going well, but suddenly the girl's illness returns. The situation is dramatically complicated. Marta is rushed to hospital. All her friends of hers, worried about this umpteenth relapse, gather in the hospital waiting for news from Dario, now a trusted doctor who is treating her. Gabriele, desperate, tries to contact Marta's austere and shy grandmother, with whom the girl has not had relations for many years. At this moment in which the young woman's life hangs in the balance, she would seem to be the only one who can decide her fate ...