What is syren about?

syren

Septimus ends up on a captivating beautiful island. He's stranded there with his badly injured dragon, Spit Fyre, along with Jenna and Beetle. There are some strange things about the island, including a Magykal girl named Syrah, a lighthouse that has lost its Light, and an eerie presence that sings to Septimus - can he escape the persistent call?

Trouble is also brewing for Lucy and Wolf Boy, who have become entangle with nefarious sailors at sea, and for Milo Banda, Jenna's father, who is harboring a mysterious treasure chest in his ship's hold..