In November 2039, marine scientist Wend Taylor heaves themself aboard a zero-emissions boat skippered by elusive nature photographer Viola Yang. Guided by instinct, ocean dreams, and a shared birthday in 1972, they barter stories for passage across the Pacific. Aljon, Viola's younger cousin, keeps a watchful eye and an innovative galley. Story by story, the trio rethink secrets, flying dreams, and how they experience their own minds.

When they reach Hawaiʻi and prepare to part ways, opportunity and mystery pull them closer together. Both scientific and personal discoveries take shape as they join with ex-lovers, lost friends, and found family. Wend must navigate an ever-shifting future, complicated by bioengineered microbes and a plot to silence scientists, entangled with inexplicable dreams and a calling to Be the Sea.