Zhou Qinglan, the art director of an advertising company, fell into a creative bottleneck after the death of his mother. He took the old photos and diaries left behind by his mother and went to Yunya Town, a seaside town that he often heard about when he was a child, to stay temporarily. She rented a blue house near the sea and tried to find inspiration among the sound of tides and the light and shadow of the lighthouse. However, she accidentally broke into a private beach and broke up with the indifferent lighthouse keeper Ji Hanchuan.
Purpose: The real lighthouse is not on the coast, but on the courage to face regrets.