In fiction, the main idea of a story is usually...
A) What the characters are doing, thinking, and feeling
B) What the reader is doing, thinking, and feeling
C) What the author is doing, thinking, and feeling
A) what the characters are doing, thinking, and feeling. That's 'cause of the fact that the story is based around the characters. Not the author or the reader. It's what happens to the character that counts.