Eric tries to stop 16-year-old Matt from smoking; Eric and Annie field Simon's nonstop requests for a pet dog; Mary asks Matt for advice about kissing boys.

The Camdens are shocked to meet Matt's secret girlfriend; Lucy has a secret crush on a classmate; Annie tells Matt the surprising truth about his grandmother.

Annie tries to deal with her mother's recent diagnosis. Meanwhile, Eric volunteers for charity work and Lucy has her first real date.

Annie's spirits are dampened by her mother's funeral and her father's sudden disappearance; Eric counsels a couple with marital problems.

A church burning causes the Camdens to invite the Rev. Morgan Hamilton's family to move in with them.

Despite warnings from her family, Lucy tries to learn the truth about Mike "The Mutant" Mitchell, a mysterious recluse accused of murder.