Lauren Ackerman, Carly's history teacher has become an emotional wreck after her boyfriend dumps her, and she takes her heartache out on everybody in class, including Carly. When Spencer discovers her agony during what passes for a parent-teacher conference, he decides to be her new knight in shining armor and fills the hole in her heart. Though things go smoothly for Spencer, Miss Ackerman, and her class at first, soon Spencer, Carly, Sam, and Freddie find that it's going to take a lot more than just a little loving to keep the teacher happy, and her class safe.

Lewbert, Carly's doorman, is injured during an exploding muffin basket prank. Spencer suggests that Carly, Sam, and Freddie help him until he's back on his feet, but it is more easily said than done. When Freddie's mother takes over, she makes it look easy, but leaves the group extremely concerned. Freddie's mother and Lewbert fall in love. Meanwhile, while using a CB radio, Spencer upsets two truckers nicknamed Porkchop and Sledgehammer.