Complex sentence: He meets some of his classmates but he does not know what his classmates have in store for him because they try to convince a girl called Alice that he is a wimp little does he know that they have some bad surprises for him.
Split into simpler sentences: He meets some of his classmates but he does not know what his classmates have in store for him because they try to convince a girl called Alice that he is a wimp. Little does he know that they have some bad surprises for him.