Sajangnimeul Jamgeumhaeje

Kim Seon-Ju, the genius CEO of a large company, was murdered in a mountainous area. However, his soul had entered into his smartphone! On the same day, Park In-Seong, who was looking for rare mushrooms to make money, accidentally found a strange smartphone. The strange smartphone that possessed by Kim Seon-Ju's soul then said, "If you will help me to find the killer, I will give you 10 billion!"