While Big Bird is trying to water some flowers, he meets a big brown creature who introduces himself as Mr. Snuffleupagus. Mr. Snuffleupagus is feeling sad, so Big Bird tries to cheer him up by inviting him to help water the flowers, which he does by spraying water out of his snuffle. Big Bird runs to tell everyone about his new friend, but they are skeptical that the Snuffleupagus really exists. Big Bird brings them to where Mr. Snuffleupagus was, but he is gone. Everyone leaves telling Big Bird it was probably just his imagination, but later when Mr. Snuffleupagus returns, Big Bird announces happily that he knows that he's real.

Susan's picture frame is broken! She heads to the library to find a book about repairing broken picture frames. The library has been converted into the "L and R Fix-It Shop" by Luis and Rafael who offer to fix her frame. Outside the shop, Rafael and Luis give out free flashlights to new customers for their grand opening. Big Bird gets a flashlight but then asks for another. Rafael explains it's only one per customer. Big Bird has an idea; he will disguise himself to obtain more flashlights! Big Bird returns disguised as a farmer, an old man, an elephant and an old lady, collecting many flashlights. Finally, Big Bird hands over all the flashlights back to Rafael and Luis as an opening day present. Susan stops by the Fix-It Shop and receives her newly fixed picture frame.

Oscar the Grouch hires a private chef to cook him grouch food. Dressed in a chef's hat, Cookie Monster is ready to make wonderful food. Oscar catches Cookie Monster eating dough while he is supposed to be cooking. Then Cookie teaches Oscar how to mix the dough, milk, sugar, and raisins in a bowl. Then, Cookie Monster uses a rolling pin as a spoon to stir the ingredients! Oscar does not want cookies because he prefers mud soup with a rock burger. Cookie Monster learns not everyone eats cookies for dinner. Later, Cookie Monster shows the boxes and boxes of cookies he baked! Tom visits and trades a jar of sour pickles for a box of cookies. Oscar realizes he has enough cookies to sell for a year and fires Cookie Monster. Cookie decides to be a cookie eater and eats the cookies he baked.

Cookie Monster loses his memory when he slips and fall on a roller skate! Is Cookie Monster a Grouch? Cookie Monster fails all the "grouchy" tests, concluding he is not a Grouch like Oscar. Next Cookie wants to know if he is a bird. He unconvincingly tries tweeting and flapping his wings, and disliked eating birdseed. He is not a bird. Mr. Hooper walks over to the mailbox to find Cookie Monster now believing he is a mailbox. However, they soon realize this is not true either. Maria explains that he is "the Cookie Monster" and gives him a cookie hoping to jog his memory, but he was not impressed. Cookie Monster slips on the skate again and hits the sidewalk, but this time he remembers everything! Mr. Hooper hands him a whole plate of cookies and Cookie Monster happily eats them all.

A big rainstorm hits Sesame Street. Tom waters plants in the rain; Rafael puts on rain gear; Molly worries that people will slip on the sidewalk. Sponsors: B, M, 4

Bert is frustrated with Ernie's shenanigans and decides to move out of the apartment. Bob asks if the two could possibly resolve it, but Bert already decided to never go back to Ernie. He imagines living outdoors but rain or snow would be a nuisance. Oscar the Grouch says Bert can stay with him in his trash can. While Oscar shops for groceries, Bert starts to clean up the trash can by removing rusty cans from the swimming pool and old shoes from the piano. Oscar explains that he likes his junk as is, and suggests Bert find another place to live. Next Bert stays with Big Bird but leaves once he tastes the birdseed and sees the rubber worm Big Bird offers for them to play. Bert eventually decides he wants to go home, and Bert promises he will never leave Ernie again.

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