The assignment revolves around the case of ACCC vs Air New Zealand Ltd, which involved allegations of restrictive trade practices by the airline company. The ACCC claimed that the airline was involved in fixing fuel surcharges for flights to Singapore and Hong Kong, contravening Section 45 of the Trade Practices Act (TPA). However, the trial judge held that there was no market in Australia affected by the conduct, and the High Court upheld this decision by majority. The assignment delves into the implications of this case, including the lack of action against the airline company and the potential consequences for competition in the market.