The assignment discusses four scenarios involving Nick and different parties (John, police, Hanson, and Ian). It applies the principles of contract law, considering whether a valid contract has been formed in each scenario. The cases of Collins v Godefrey, Combe v Combe, Glasbrook Bros v Glamorgan County Council, Stilk v Myrrick, and others are referenced to illustrate key concepts such as consideration, public duty, and promissory estoppel.