Simon's classmate Mark Huff's father Carl is stopped by a light push from caring biology teacher Lane to storm at his boy. When Carl complains to the principal, Simon dares only say he didn't get a clear view, then feels morally guilty for not having prevented a fine teacher being suspended, later even dismissed. Eric finds out Carl is a domestic bully and gets Lane reinstated. Matt and his friend Scott misread apparently sexual signals from a teaching assistant, which causes repeated havoc for Matt. Rather then let Annie chose a disastrous 'pregnancy project', Eric arranges a handsome piano teacher, Josh, who flirtatiously restores her self-esteem.

After drinking Matt's coffee once, Simon fears to be addicted and acts accordingly. A natural, legal 'supplement' is offered to study-exhausted Matt by buddy Scott, whose father got it in a health store, and to Mary by over-competitive teammate Diane Butler, whose father uses it himself. Eric realizes it contains dangerous ephedrine. Eric's former rock band mates visit GlenOak. Matt sets something right. The Butlers are in for a shock as Diane suffers a fatal heart attack from the ephedrine.

Simon risks losing his paper-route unless he manages to collect the money from scrooge Malone and Mrs. Hinckle suggests how to trap him. Matt's married college president Jack Brenner's reputation is tarnished by at times even violent public controversy over a formally allowed affair with a grad student. Matt's friends and parents get involved including him. Mary bumped into Miles Olsen's car in the school parking lot, but he gets a date with Lucy.