How to return to main menu (here: 'play' button) after video playing ends?

I would like to make a really simple VR video player in unreal. I have already a scene where is a play button (widget blueprint) and a 360 degrees background. I’ve set gaze on based selecting in the center on the headset. When I selected the play button with my gaze then a 360 video starts play in an other (second) scene.
My question is how can I return to the first scene after the 360 video played? I would like to see the play button with the background again.

I’m using UE 4.26.2 and Quest 1.