Transformers: Animated (2007)

S2E2 The Return of the Headmaster

Title: The Headmaster's Comeback Plot: Optimus joins forces with Sentinel Prime to confront the formidable Headmaster and put an end to his sinister plans. Together, they strategize and prepare for an intense showdown, relying on their combined strength and knowledge to outsmart their enemy. As they navigate challenges and uncover hidden secrets, Optimus and Sentinel must stay united to safeguard their world from the Headmaster's return.