Twelve-year-old Yeosang knows how to roll with the punches and keep from ruffling too many feathers. However, a moment of truth to determine his future hangs on his ability to stand against a seemingly unstoppable force.

Seonghwa knows who he is. Or at least, he thinks he does. He convinces himself no amount of digging up the past can help him with his future, but leaving it all behind quickly becomes harder than he thought.

Every story has to start somewhere. And ATEEZ's story begins on a beach with a boy. From one unlikely home to the next, each page of Hongjoong's life comes together and the pieces fall into place for the origin of the group built from nothing.

Newly orphaned Yunho and his younger brother Gunho navigate life in the orphanage and on the streets with the modest goal of survival driving them forward. With the promise of harsh winter and the threat of separation looming, what Yunho thought was the end of his life turns out to be the beginning.

Little Mingi's life is always an adventure, only without the actual dangerous parts. That is, until he comes to a mysterious town and meets a mysterious person who will turn everything he thought he knew on its head and make him question even himself.

San's life has been chaos as long as he can remember, but the path of his life has always been set- until one day, it isn't. His ability to think on his feet and adapt is suddenly tested and only by overcoming the odds will he set sail from his little home island.

Jongho's life is already hell, so when he finally runs away from it, he figures it can't get much worse. It only takes him a freak storm, a mysterious cave, and a strange group of mermaids and pirates for him to realise he may have been wrong.

A month after being scattered to the four winds after that fateful day in Namhae, seven former pirates are struggling to find their places in a newly raging war. Aimless and leaderless, they'll have to pick up their own shattered pieces before going anywhere. Will they make it home? And will there even be a home for them to return to?

They say no one ever writes about the return journey, but leaving their Wonderland isn't the end of the ATEEZ's troubles. When a shadowy threat follows them back around the world, Hongjoong begins to grapple with a truth he's known all along. Maybe some things are best left buried.

Map and key acquired, the pirate band ATEEZ is on a course to find a legendary treasure in the mystical unknowns of the East, until a lengthy detour from their quest begins to tear them apart from the inside. Some problems can't be solved with a smooth tongue and a quick draw. Sacrifices have to be made.