As Chestnut grows quickly, keeping him hidden becomes impossible. Rosamaria discovers him but agrees to help keep the secret, even sneaking him to the park while the girls are at school. Meanwhile, Kosh and Wesley unknowingly target the wrong apartment, but Chestnut scares them off in the night. Later, during a party, Chestnut blows his cover by chasing the burglars, through the wedding of Mr Trundle’s niece. Mayhem ensues leaving everyone stunned. Mr. Trundle banishes Chestnut from the building. Sal, determined to protect Chestnut from going to the pound, sneaks out with him in the middle of the night.