Watchtower 10's necessary personnel happen to be: a generalist DJ who spends her free time relaying folklore from abandoned parts of the Bridge, her supervisor (who's only there because he lost a bet), an unfailingly optimistic Bridge Travel Agent, and a groundskeeper who has a thing for romantic comedies.

Unbeknownst to the general public (but totally knownst to each watchtower's crew), these stations also hold a secret that could potentially destroy the world...or save it.