Missing Keys

S1, E18: When Mo’s keys fall into the pond, Poppy takes them on a submarine voyage to look for them, only to encounter Capt. Seacrud (Egbert) who attempts to arrest them but only breaks their sub. Poppy and friends take to the ocean in diving suits, where they find Mo’s keys in the arms of a giant squid, so Alma and Mo distract him with a song.