Linus van Pelt is fond of his teacher, Miss Othmar. To prove his point, he buys her a huge heart-shaped box of chocolates. However, Violet (Peanuts) warns him it is probably not smart to fall in love with a teacher. But Linus says that he is fond of the ground she walks on. When he leaves Sally Brown believes that Linus bought the candy for her, and decides to make him a valentine in return. Later, Lucy van Pelt goes to a puppet show held by Snoopy. At the concession stand, Lucy asks for popcorn. However, because Snoopy cannot understand Lucy he gives her candy, then soda, and finally (as having been requesting all along) popcorn. With Charlie Brown narrating the show, Snoopy tells a story about true lovers that is a little too interactive for Lucy's taste.