Zhou Nuo is a beach landscape installation designer who does an unpopular and romantic job in a small coastal town - using metal, wood and glass to build art installations on the beach that change with the tides. She has a secret: the letters "SY" are engraved on all the devices, which is her high school crush of three years. She thought this relationship had been blown away by the sea breeze.
Seven years later, coastal engineering restoration engineer Shen Yu returned to this beach. He is taciturn and wears a watch on his wrist that he never takes off. He is responsible for assessing and dismantling all "substandard" beach structures - including Zhou Nuo's installation. The corrosion rate was 21.7%, Exceeding the standard. When he handed her the correction notice, his fingers touched hers. Neither of them retreated.
Typhoons, tides, corrosion, repair... They are pulled between the ups and downs, testing between rust and rebirth. Zhou Nuo discovered that Shen Yu's notebook contained her high school design sketches, and Shen Yu discovered that her devices were all love letters written to him. But the seven years of blankness are like the sea breeze, eroding every approaching moment.
When the waves are about to take away everything, they finally understand that some devices are destined to be corroded, but some feelings become brighter as time goes by.
