Can you put in and animate 3D models in After Effects exactly like in this video?
Combining camera footage with generated objects is called compositing.

The candy scene could be created in three steps:


The girl was filmed ahead of a green screen. Green parts of the footage made transparent.
3D scene was created with background furniture and the candies flying – in Cinema 4D or any other 3D package. It was rendered to a movie clip A. And the frames with candies flying towards the viewer rendered with transparent background to clib B. 
AfterEffects or other compositing package was used to combine the three layers (front to back): clip B, green screen, clip A.