A script would look something like this:
dim fb as xpOutputFrameBuffer
dim scnSelected as xpScene
dim sd as xpSceneDirector
Engine.GetOutputFrameBuffer(x, fb)
fb.GetSceneOnLayer(x, scnSelected)
scnSelected.GetSceneDirectorByName("SD_YOURNAME", sd)
sd.Play();
Replace the X's with the id of the output frame buffer and the layer on which the bug is loaded. Remember that the output framebuffer starts with 0 and not with 1.
And replace the SD_YOURNAME with the name of the SceneDirector which is the same in every scene.
#XPression