Jessie quickly gets attached after gaining temporary custody of an abandoned infant; David is lovesick on his 13th birthday; Gus tries to prevent fiscal disaster; and a series of earthquakes has everyone except Kris on shaky ground.

In the earthquake's aftermath, David and his class take refuge in a church; Gus, the baby and a banker are trapped in an elevator; and Kris's flight is diverted because of damage to the runway.

Gus's opposition to a teachers' strike prompts him to volunteer at Kris's school, where he meets a burned-out teacher and sees the students' lack of respect; Molly and Bertha have a falling out over potential sweepstakes winnings.

Kris makes a new-wave friend to save a teen dance club; David skips school to go surfing; Molly and Bertha decide to become blood sisters.

Jessie and Gus's "snit" erupts when Jessie threatens to move her family out, while David tries to get it all on video; Molly thinks she's adopted.

David and his buddies search for ghosts in a spooky house; Gus tries to find a home for the horse he's inherited; Nikki and Kris plan a Halloween seance.

In a coma following a bike accident, David is visited by his late father, John, who helps David work through his unresolved feelings about his father's death.

David and his friends go on an overnight camping trip without permission to search for buried treasure after finding an old map; Gus goes to work at a stable and discovers a mutual attraction with his pretty employer.

A tough ROTC instructor causes Kris to doubt her dream of going to the Air Force Academy; Gus's service club plans a Vietnam memorial, and Gus can't understand Lt. Col. Trask's ambivalence towards it; Molly grows squash and befriends caterpillars; David regrets his gift to a pretty classmate.

Encouraged by memories of his father's past glory, David joins the school basketball team, but doesn't enjoy it; Molly and Bertha mistakenly believe Mr. Kaplan is dying; Kris and Nikki have a falling out after Kris accuses Nikki of keeping secrets; Jessie dates an old friend.

When Gus takes the family and Joe Kaplan to a friend's cabin for the weekend, they unexpectedly meet the friend's son, a troubled professional football player; David makes an expensive bet with J.R.; Molly works on a poem for school.

Kris meets her Russian pen pal, a talented pianist whose teacher tries to keep them apart; Jessie objects to being paid less than a male colleague; Molly and Bertha enjoy a soap opera.

After Gus identifies the young man who mugged him, the mugger's brother begins a campaign of intimidation against the Witherspoon family to keep Gus from testifying in court; Molly and Bertha build an ant colony for a school project; Kris is overwhelmed when she studies for an important test.

Kris and Gus compete together on a game show; Jessie discovers a lump in her breast; David receives an anonymous love note.

Gus convinces Joe to join his service club, but when Joe is blackballed for unknown reasons, it causes a rift between the friends; David's band gets a female drummer and David and J.R. both fall for her; Molly awaits a reply from Jason Bateman after writing him several fan letters.

Jessie and the children's visit to Hawaii is marred by mysterious goings-on; and a friend with romance problems disturbs Gus's peace at home.

David, Molly and Bertha are stranded on a deserted island with their injured boat captain, while Jessie and Kris frantically await word of their whereabouts.

An editorial critical of student-council candidate Kris causes friction between Kris and Jessie, who serves as the paper's adviser; David and his friends decide to get their ears pierced; Molly and Bertha take up tap dancing.

David and J.R. set out to break up a car-theft ring, convinced that the new neighbors are the criminals; Joe decides to take up sky diving; Molly gets a magic set.

David and his band fall for the charms of a young man who promises them a shot at rock-and-roll heaven, while Gus believes it's a scam; Molly takes a cue from Ghandi when a cranky neighbor complains about Arthur.

A rash of robberies pushes Gus to organize a neighborhood watch; Molly discovers her new friend has a secret; and Kris awaits the appearance of a guy she met on a "chat line."

Molly shoplifts to join a secret club; Kris takes a job; David gets a crash course in horseback riding to impress a girl; Gus is confused by his new romance; Mr. Kaplan damages one of Gus's toy trains.