Titan's Song is a young adult science fiction adventure about family, courage, environmental consequence, and the fragile worlds that survive in the shadow of powerful systems.When a distress signal reaches the MacIver kids, they are pulled into their most extraordinary journey yet: a mission to Titan, Saturn's largest moon. There, beneath the vast glow of Saturn's rings, they discover Aha Nui, a hidden world of methane lakes, ancient Moai, bioluminescent creatures, and a Rapa Nui community fighting to protect the balance of their home.But Aha Nui is in trouble.The great methalodons, sacred guardians of the methane lakes, are dying. The lakes themselves are being depleted and contaminated. Weather patterns are shifting. Old systems of power are failing. As leaders argue, corporations protect their influence, and sacred traditions collide with urgent survival, two young Rapa Nui—Ana and Hiro—risk everything to call for help.The answer comes in the form of the MacIver kids.Still reeling from revelations about Allen's past, the family must face a world where myth, science, memory, and responsibility are woven together beneath alien skies. As they work with the people of Aha Nui, the MacIvers uncover buried histories, broken truths, and a crisis far deeper than one damaged ecosystem.To save Titan's song, they must listen to the voices others have ignored: the young, the grieving, the displaced, and the living world itself.Blending space adventure, environmental allegory, family drama, and ancient mystery, Titan's Song is Book 3 of The MacIver Kids Adventures, a young adult science fiction series about ordinary kids called into extraordinary situations—and the courage it takes to answer when a world asks for help.