When accomplished astrophysicist Dr. Lillian Hayes accepts a six-month research position in a quiet seaside town, the last thing she expects is to fall in love. Driven by logic and facts, Lillian has always kept her emotions at bay until she crosses paths with Nathan Carter, a charming local bookstore owner with a love for poetry and a painful past. Nathan, still grieving the sudden loss of his fiancée three years ago, has vowed never to open his heart again. But Lillian's sharp wit and hidden vulnerability intrigue him, pulling him into a connection neither of them anticipated. As their bond deepens beneath moonlit walks and starlit promises, past wounds and fears threaten to unravel everything. When Lillian is offered a career-defining opportunity overseas, she must choose between the safe, predictable life she has always known or risking it all for a love that defies logic. Meanwhile, Nathan must decide whether he's ready to let go of the past and fight for a future with Lillian before she disappears like a passing comet.