Ending the game after colliding with an object.

So, basically what I need help with is how to end a game after i collide with a specific object? I want the game to end after i collide with one specific object (its called "sdcard"). So when I touch the sdcard the game will display something like "Mission Complete" and go back to main menu or restart the game. My main menu scene is called "Menu" and my game scene is called "Level1". Anyone knows how to make it work?

P.S. C# or JS, doesn't matter. If anyone wants me to upload the game, I will upload it to some free hosting with a virus scan.