Idioms and Phrases with on the scene, be
on the scene, be
Also, arrive or come on the scene. Be or arrive where an action or event occurs, as in They won't have a wild party because their parents will be on the scene, or Once Bob arrives on the scene, you can expect fireworks. Alluding to the theatrical scene, where a drama is being played, this phrase has been used more loosely since the early 1700s.