u/Careful-Reference650

I (50M???) recently united with my grandfather (110M) and a project of his (???M) when trying to retrieve my stolen property with my enemies. He then told me about a superweapon he made for a government agency for his freedom, and that he planned to use it against them. After breaking in and launching the weapon into space, he revealed that he planned to fire it at Earth, because of the death of my cousin in an accident. I overturned and killed him, and with the aid of my enemies and the project (who also betrayed my grandfather) saved Earth from the weapon before the reactor in it exploded. AITJ for even aiding him in the first place?