Simon discovers girls - and nits - in the new story in the bestselling series, now on TV and Netflix. Simon feels a new emotion stirring - he thinks he is in love with Lou! Sadly, Lou loves Mamadou... One day Lou comes to school with nits. She's suddenly not so popular any more. Except with Simon. He doesn't care about nits! Lou gives Simon a big hug for being so kind - and some small visitors too...