arrive/come on the scene

come on the scene

1. To reach a destination, usually as something is happening there. When did the police come on the scene? By the time I came on the scene, Kate and Jen were already arguing.
2. To become involved in a particular situation. Caitlin and I used to be best friends, until Liz came on the scene.
See also: come, on, scene

arrive (up)on the scene (of something)

 and arrive at the scene (of something)
to reach the location of an event in progress. (Upon is formal and less commonly used than on and at.) The police arrived on the scene of the crime. They arrived upon the scene of a frightening accident. What did they do when they arrived at the scene?
See also: arrive, on, scene

come on the scene

 and arrive on the scene 
1. Lit. to arrive at a place. When we came on the scene, the ambulances were already there. The police arrived on the scene and began directing traffic.
2. Fig. to become part of a situation. She thought she was in love with Harry until Bob came on the scene.
See also: come, on, scene

arrive/come on the ˈscene

arrive in/at a place, probably to change the existing situation: John and I were really happy together until she came on the scene.By the time the police arrived on the scene, it was too late.
See also: arrive, come, on, scene