One day, a new Megatron () steals a Cybertronian artifact called the golden disk and flees through time and space to a planet full of raw energon.

Source: https://collider.com/cartoons-produced-in-canada/

Speaking of which, since the energon on Earth is likely very powerful and capable of even reviving Transformers, dangerous villains like Unicron will try to exploit it for either enhancing their abilities or using it for external weaponization.

Source: https://screenrant.com/transformers-rise-beasts-earth-energon-important/