After an invention doesn't work, Jayden questions his skills as an inventor; to stop Scarlett and Skid, the upgraded Firebuds team up with the Aquabuds.
When Flash loses his favorite plushie and goes searching for it at sea, the Buds must rescue him; Drift feels uncomfortable when the Buds try to make friends with him.
Axl gets jealous when Violet befriends a Veterinary Van named Vinny; the Firebuds build a firefighting training tower.
Violet gets frustrated with herself when she can't fix Carly; Iggy and Harry compete to be in Vin Voltage's new movie.
The Firebuds and AquaMates get some underwater upgrades to rescue Halo, who has crash-landed on a volcanic island.
Ripley and the Firebuds try to save the Harbor Festival; the Buds encounter a trawler that is inadvertently polluting the ocean.
The Buds must find clues and solve a puzzle to free themselves in time to stop the Rileys from stealing everyone's Halloween candy. Violet brings Halloween to the hospital.
During a visit to a farm, Flash inadvertently causes a silo fire; Smush and the Firebuds try to collect all the trash in Gearbox Grove.
Smush struggles to make Aimee the best birthday present ever; the Firebuds teach Castor how to care for a pet.
Halo throws a Father's Day hoedown at his uncle's ranch; Jayden and Jazzy help out at their grandma's birthday BBQ.
Kailani wants to surf a big wave, but has a hurt arm; the Firebuds and Aquabuds try to save a sunken submarine.