Why so late

"Why so late?" In the sigh of a man in his fifties lies incredulous and delighted amazement at his chance encounter with a woman, only in her sixties according to the birth register, who sweeps him along like a wave and lets them both experience the highs and lows of late love. Neither of them are prepared for the rivalry of his teenage daughter, who vehemently defends her monopoly position in her single father's life. How capable are the three of them of maintaining a relationship in this exceptional situation, which develops turbulently over four years and is stretched to breaking point?