After the war Optimus Prime and his Autobot friends Bumblebee, Ironhide, Jazz, and Ratchet stayed on earth since the Allspark was destroyed, but Optimus found something for settling for.. he found Estella Darling she was a mechanic, she was more than simple intelligent, she is the first human being to understand the Cybertronian language and symbols, and she’s known as the “Freedon fighter” and she’s 21, she loved Optimus as much as he loved her and she now lives with him as his partner and they worked for NEST with Lennox and Epps it was a top secret military base and they would go all over the world exterminating Decepticon’s