Mar is transmasc nonbinary, a pirate, and a magic user who can control fire and ice. On their 16th birthday, disaster strikes the ship they live and work on with their father and a crew as close as family-a storm takes the crew, and El Diablo comes for Mar's father's soul. Somehow, Mar is spared and wakes up on a different ship, also crewed by pirates who steal from the Spanish and give food, weapons, and other supplies to those in the Caribbean islands fighting Spanish control. Mar strikes up a somewhat reluctant friendship with a boy their age on the ship, and refuses to the negotiate with a demonio who says they can help Mar free their father's soul. This story has a lot of fun elements, and the audiobook is expertly read by Vico Ortiz. But I didn't love this book as much as I wanted to. I found the first half quite slow, and overall felt like not quite enough happened to justify the length. I loved the nonbinary rep and the Spanish phrases in the dialogue, but wanted faster pacing and quicker reveals, especially of the demonio's motivations.