Simplify the following text for a Grade 7 native English-speaking person.
Original: His plan is that Susanna will give him a note which says she wants to meet him that night in the garden ; Cherubino will be waiting there , dressed as a woman so that the Count thinks he is Susanna .
Simplified: Susanna returns to her room for some clothing in which to dress Cherubino . While the Countess and Cherubino are waiting for Susanna to come back , they suddenly hear the Count arriving .