Mobile Suit Gundam AGE takes place in A.G. 101, when the space colony Angel is attacked and destroyed by an unknown entity known as "UE". This event becomes known as "The Day the Angel Fell", marking the start of humanity's struggle to survive. In A.G. 108, Flit Asuno witnesses the UE attack on the space colony Ovan, killing his mother and leaving him with a mysterious device containing the blueprints for an ancient mobile suit, the Gundam.