Welcome to Sea Glass Cove! Marine archaeologist Lauren Sunshine is used to life on the go. Her suitcase is always packed ready to explore the country's underwater heritage so when a shipwreck is found off the Dorset coast, she is thrilled to be leading the excavation team. Philippa Silver, 'Phil' to the folk of Sea Glass Cove, has devoted her life to the Museum by the Sea. But funding is tight, and despite subletting half of the museum to her best friend Jules's sea glass shop, she fears for the museum's future. Phil hopes the wreck discovery could bring more visitors, but there's a problem – the museum's too small to house its treasures. Thankfully, new friend Lauren seems as determined as she is to save the museum. But, when Phil's brother Ollie catches Lauren's eye, she begins to wonder if she has more than one reason to be interested in life at Sea Glass Cove….