To Kill Time

14-year-olds June Lily and Derek Han decide to go on a treasure hunt that might change history itself. In the duration of their quest, they face a series of hardships. Along the way, they meet ally and foe alike. But some of those people might be mystical beings, or worse, traitors.
They put everything on the line to make a revolutionary change in the world. If they succeed, they will be known nationally and make their mark in the history books. If they fail, they both sit at death's door.
Stepping headfirst into danger isn't how June operates, and it's all because of Derek they're stuck. June's going to have to change her new norm.

[Some of the chapters are based on Auctor challenges I participated in]