For seventeen-year-old Opal Hopper, code is magic. She can build entire worlds from scratch -- shimmering lakes, Mars craters, any virtual experience her heart desires. But she can't code her dad back into her life. WAVE, the world's biggest virtual reality platform, has announced a contest where the winner gets to meet its billionaire founder. The same billionaire who worked closely with Opal's dad. The one she always believed might know where he went. The one who maybe even murdered him. How far will Opal go for the answers -- or is it the attention -- she's wanted for years?