Maria takes notice of OSCAR’snewly-beautifiedTRASHCAN, decorated with flowers, a clean picket fence & a welcome mat. She rings the very calm-sounding doorbell, & a neatly-dressed OSCAR very politely answers. OSCAR then explains that he's preparing for a visit from his brother ERNESTTHEGROUCH.OSCAR holds a grudge against ERNEST for being the favorite kid in the family, so he plans to act nice & un-GROUCHY as a way of getting even with him.
Maria & Luis suddenly bump into ERNEST, who snidely asks where OSCAR’sTRASHCAN is. He is perplexed to see the new decor, & becomes even more suspicious when OSCAR very cordially invites him in. ERNEST then begins to catch on, & decides to throw some niceness back at OSCAR. Maria & Luis, who watch nearby from the stoop, laugh at the thought of 2GROUCHES acting nice to each other.
Maria & Luis become concerned about OSCAR & ERNEST, so they devise an idea to get the GROUCHES to be themselves again. They ask Mr.Hooper to whip up a concoction of peanut butter, ketchup, pickles, & sauerkraut.
Maria & Luis bring the GROUCHY concoction to OSCAR & ERNEST. Initially, the GROUCHES politely insist on the other taking the present, but once they learn what's in it, they immediately start fighting over it.