Jumoku Hime

While picking fruit and herb in a forest with his maid, our guy got hit on the head and tied under a sacred tree. When his secretary/bodyguard/wife found him, he had lost some of past two months memory. His first assassin suspects are his secretary and three maids. Later on, he found that either there is an assassin hiding in the forest or something strange is going on. Can he find out what in 10 days while loving one of the girls?