When a very young Papyrus gets buried by heavy snow during a blizzard, he almost freezes to death. It's up to his big brother Sans to save his life. With the help of a certain friend, it could be possible. But Sans, as thanks, makes a promise with them that he may or may not be able to keep in the end.

A mysterious basket is left on the band's porch, which turns out to contain a baby, the product of Paula's accidental pregnancy. She decides to give the newborn to 2-D because she doesn't want to raise him herself. 2-D now has to learn how to care for and raise the baby all by himself in 212 Wobble St. Rated T for profanity.