On a summer night in 1998, seventeen-year-old Dean Banville survives a suicide attempt. Like a supernova bending the fabric of spacetime, that single moment hurls Dean and everyone who loves him into an unfamiliar orbit. His estranged parents reunite under one roof, determined to keep their son alive even as old fractures threaten to reopen. His older sister, Erica, cannot escape the memory of how close she came to losing him. Dean's best friend, Andy Lawrence, longs to help him heal, only to realize his feelings run deeper than friendship-- a truth that could cost him the acceptance of his deeply religious family. As Dean, Andy, and Erica struggle to escape the gravity of that night, they are drawn together by questions as vast as the universe and as elusive as quantum physics. But when another devastating loss shatters the fragile future they have begun to imagine, Dean is forced to confront the far-reaching consequences of one impulsive act-- and whether redemption is possible after the people you love have paid the price.