The assignment presents a case study of Mary, an individual seeking to live in Australia after completing her studies. It examines her initial attempt to apply for a skilled subclass 485 visa and its subsequent rejection due to ineligibility. The analysis then shifts focus to the appropriate visa subclasses (partner visa subclasses 820 and 801) suitable for Mary's situation, outlining their eligibility requirements and benefits. The document also highlights potential challenges Mary might face based on her expired student visa status and potential breaches of immigration regulations.