Board Thread:News and Announcements/@comment-3965346-20150918010729/@comment-4161284-20150923171140

With what we know from synopsis and based on this promo art it'll likely be like this:

Steven finds Peridot and takes pity on her, what with not having foot to stand on and tries to hide her from the Crystal Gems... likely in the bathroom.

Which would kinnda make sense considering that the next week's episode "When it rains" says that Steven helps a friend who is afraid of thunderstorms. Why else not name a friend to begin with, if it was a spoiler?

We'll likely get more information on Yellow Diamond and the reason why Peridot's afraid of thunder is because she controlls lightning.