Sapphire Night, a Quelian Pegasus Mare living in the Noirvale District only has one goal, living in her Older Sister's Hoofsteps and becoming a Private Investigator. She's done just that, living in the Valor Slums and taking any case that comes her way. But a few days after she saves an enslaved filly, strange things start to happen in her cases, actions that make no sense, suspects disappearing without a trace, and a sinister mastermind behind it all that not even the criminals know who sent them. It's time to unravel this case, just be careful of who you trust...