Will you come with me to my child's play?

In which of the choices below is the above sentence rewritten in the conditional mood?

1) If you are free, you will come to my child's play.
2)You must come to my child's play!
3)I'm glad that you're coming to my child's play.
4)Won't you come to my child's play?

1) If you are free, you will come to my child's play.