Siren is a multi-talented artist who spends her time creating and performing. Zander is an adventurer, always looking for new challenges and undiscovered wonders. Both are solo travellers who go their own way in life, never settling in one place or with one person for long. Both are immortal in a universe where immortality is the privilege of very few.

After a chance encounter and a global disaster, Siren and Zander agree to work together to turn things around. But when a simple task goes wrong, these two independent souls may learn that sometimes, even the immortal ones need others to lean on.