How to simulate physics and play media player in sequencer

First off, I am using UE4.27 and would like to create a full music video using it.

I have a level created where I (green screened footage of myself) am standing on a wooden plank in the ocean. When I hit play at the top, the plank that I am standing on drops into the ocean and I am floating on it. It also plays the image sequence of me singing the song.

How do I get it to where this physics simulation as well and the image sequence plays in the sequencer?