In our vast universe, finding one's place in it all is a daunting task. Marz Starchild is the story of a young Puerto Rican girl from Brooklyn, New York, who is trying to find herself and the universe all at once in her own way.

She begins uncovering the underlying wonders of a new planet through the activation of her invention, the Realm Portal, and an ominous beeping sound that signals the start of a journey neither she nor her friends will soon forget.

Marz and her friends embark on a voyage across the stars to try and save a dying planet, Proxima Centauri b, and in doing so they end up saving their own world from imminent destruction. However, in order to save these sister planets, she and her friends travel across time and space where they discover the harmonizing vibrations that unify all living things. As Marz undergoes this adventure, she learns the power of believing in oneself as she overcomes obstacles, the power of keeping her Puerto Rican customs and traditions alive, and the power of friendship.

In this journey of "magical sci-fi realism," a blend of scientific and mathematical facts alongside deeply held family and cultural values are revealed as we are all taken on a powerful and exciting voyage across the universe and into the human heart.