Indigo's aunt had just purchased a summer home in the Black Pony Mountain. As such she told her niece that she could invite a few friends, enjoy a few days at her summer home, and just relax. It sounded like the perfect idea. Unbeknown to them things weren't exactly how they seemed. Forces unknown to the girls had set things in motion to ensure that this trip would truly be one to die for.

Based on Nico Stone-Rupan's Sour Sweet Stories.