For Lisa and Stefano, love and passion have become a memory; only affection remains. While traveling, Lisa meets Marco—the man with whom she shared her first kiss—and they discover that their love never truly ended. Meanwhile, during his wife's absence, Stefano runs into Alessia, an ex-girlfriend, at a gathering at friends' home. Lisa's return home seems to set things right; Stefano realizes he truly loves his wife. However, something has changed for Lisa: she comes to see Marco as the love of her life and decides to leave her husband after a confrontation with him.
