In this town, the coves are bottomless and the pier has no end in sight. There's a high tide and a low tide . . . and a vanishing tide. Dogs are a myth, but mermaids are totally real. And seaweed is the main ingredient in every meal-watch out, it might just start chewing you back!

New kid Davy definitely thinks Topsea is strange. His mom keeps saying they'll get used to life in their new town-it's just the way things are on the coast! But after his first day at Topsea School, Davy finds himself wondering: Why is his locker all the way at the bottom of the school swimming pool? Why can't anyone remember his name? (It's Davy!) And why does everyone act like all of this is normal?!

Through newspaper articles, stories, surveys, notifications, and more, follow Davy and the rest of Ms. Grimalkin's fifth grade class through the weird world of Topsea. (Whatever you do, don't make eye contact with the rubber ducks.)