It's a low-key, Real World type of Japanese reality show. FYI: subtitles are involved!

Six strangers (3 men, 3 women), move into a house and live together. At any time, for any reason, house mates can decide that they want to leave Terrace House. House mates don't have to leave one at a time, either.

When house mates leave Terrace House, a new set of house mates arrives to live at the house, so that the number of people in the house is always 6 (3 men, 3 women).

There's also a permanent cast of commentators. They talk to one another and the viewing audience about the people and happenings inside Terrace House.