Sectaurs was an extremely short-lived cartoon series from 1985, that only had five episodes. Its vast toyline, however, was rather large - and each commercial was usually part of a 'soap opera', introduced in parts, with a "to be continued" line at the end.
This commercial was one of the earliest, for the large "Hive" playset - with secret compartments and a glove-operated spider creature that lives within a cave.