Minecraft: The Shipwreck

Unravel the mysteries of an extraordinary underwater world in this
official Minecraft novel! When three kids discover a mystery in an
abandoned Minecraft server, they must race against the clock to uncover
its secrets.
Jake Thomas is always the new kid. His family
moves so much for his dad's work that it's easier to keep his head down
and not get attached to anyone. He'll be gone in a few months anyway.
But when they end up in Los Angeles, Dad promises this will be the last
time they move. The Pacific Crest Apartments are home now . . . which
means it's time for Jake to finally make friends.
Jake isn't
sure he should count the two kids he meets at the apartment's community
center as friends, though. Tank Vuong is a large and intimidating boy
who hangs with a tough crowd, and Emily Quesada is a fashionista who's
quick with a sarcastic remark. But when he discovers an old computer lab
in a forgotten corner of the community center, with a strange Minecraft
server containing cryptic riddles, he realizes he’s going to need help
cracking the code—because at the end of the summer, the community center
will be demolished, and all hope of solving the mystery will go with
it. Following the hints left by an enigmatic figure known as The Wizard,
the trio journeys into the dangerous depths of the ocean, where uncanny
creatures lurk and untold treasure awaits...

Minecraft: The Shipwreck is the sixth Minecraft novel.