Narwhal and Jelly are back and Narwhal has a new obsession . . . peanut butter! He's so obsessed he even wants to change his name to . . . that's right . . . Peanut Butter! Ever-sensible Jelly isn't so sure that's the best idea, but is all for Narwhal trying new things (instead of just eating waffles all the time, no matter how delicious waffles are).