The lesson plan aims to teach students occupations and words containing "ay" and "ou" sounds over 20 minutes. The teacher will start by asking students to name occupations in pictures and what they want to be. Students will then practice saying words with "ay" and "ou" together, do exercises as a class and individually, listen to a short story, and sing a song. The lesson concludes with assessing if students can spell, pronounce, and identify occupations, and complete a crossword puzzle for homework.