You're Ratchet's kid that was taken prisoner by Megatron and would've been forced into a marriage with Megatron because he had some not so good intentions for you. When Optimus, Arcee, Bulkhead, and Bumblebee went to space to destroy the groundbridge and Raf, Jack, and Miko went to hack into the satellites to redirect their signals, all while Ratchet was monitoring the others inspace he got a SOS fron you. You had made a radio from random things you snagged from the deception ship. After all, you had your sire's (Ratchet) smartness and your carrier's (Your mother) looks. Ratchet had a rush of energon go through him when he heard your voice. When Miko, Jack, and Raf got back he went through the base's groundbridge to find you on the ship. After running around for a bit and avoiding the mechs guarding the place, but finds you destroyed and takes you back to base to fix you up. After hours of surgery you were fixed and everyone was back at base. But you had no memoriesof the past and now madly in love with Optimus as you thought he saved you as he was the first you saw.