Lisa's new invention accidentally freezes everyone on the house, now she has to defrost them before they melt.
One day, Lisa's testing her new invention, a machine to freeze edibles (thinking the freezers are obsolete), to revolutionate the science. She tests it with ice-cream cones. In a traditional freezer, the ice-cream would took 6 hours to freeze, but in her invention only takes 30 minutes. The time that last defrost also is affected. Freezer's ice-cream lasts 10 minutes, while the machine's one lasts 4 hours. With this on mind, Lisa declares her invention a success.
The next day, Lisa is not at home, and because there's too much heat, Lincoln suggests freeze ice-creams at Lisa's machine. All sisters agree. But the siblings forget to turn down the machine, and eventually they start to fell cold. The machine continues to freeze until the snow ends.
Lisa arrives home, and she surprises of seeing her siblings frozen. She instantly finds a way to defrost them. While going up the stairs, Lincoln is frozen at the hallway, and his tuft of hair falls. Which means he's starting to melt, so Lisa must act fast. She thinks in using the laser, but she doesn't wants to melt faster the people. Later she thinks in using a knife, but not. For a brief moment she thinks in using candles, but they would took too long to heat. Fortunately the siblings weren't melt at all, so Lisa put them in buckets, and later placed them in molds. She activates a solidifier ray so they can move again, and don't melt. Nine of the ten siblings exit complete, but Leni's fractured arm falls (as if they amputed it by mistakes, it's the left one if you ask me). Because there's no way to place it again, Leni will have to learn to live with only one hand.
- Episode was to premiere at October 6 at 23:59, but after the writer accidentally pressed E, so he had to write the episode again. The episode premiered October 7 at 0:40.