"Olivia Garza thrives in her unconventional, service-oriented life. By day, she helps troubled teens . . . by night, she creates a viral web series when she tries to better understand her mother's desperate decisions by retracing her steps with a camera. So far, Olivia has been an anonymous narrator, but she's promised to reveal herself in the last stop on her documentary: Kenya. Prince Louis, heir to the throne of the small European kingdom of Alloria,...