Sari, No One's Home.While Prowl and Sari practice agility skills, Bulkhead comes wandering in to inquire about the source of a dripping sound that is annoying him. He soon tracks the sound to Bumblebee, who is leaking oil, and Ratchet ends up having to use his magnets to free from Bulkhead. Optimus, Prowl, and Sari come in and Prime informs them that Scrapper and Mixmaster have surfaced again. The Autobots take off to find them, leaving a very upset Sari, who gets into all sorts of trouble, behind. While searching for the Constructicons, Bumblebee almost destroys some machinery which he mistook for them. Meanwhile the objects of their search follow Bumblebee's oil trail back to the plant and Sari. Blitzwing, who had been sent to find the Constructicons, finds the Autobots and engages them. In the end, Blitwing is called off by Megatron and the Autobots return to the plant to find that Sari had chased Scrapper and Mixmaster away with the plant's machinery.