In this continuation of a series on building an end-to-end Ionic 2 application, the focus shifts to developing the frontend of a Todo app using Angular 2 and TypeScript. After setting up an Express app and MongoDB database in the previous installment, this part demonstrates how to create an Angular service, `TodoService`, to fetch Todo items from the backend API. The service utilizes Angular's HTTP module and Observables to manage asynchronous data requests. The frontend involves defining a `Todo` class for type-checking and updating the `HomePage` component to display the fetched Todo items using Angular's `*ngFor` directive. Additionally, the text explains how to style the app using SCSS and run both the frontend and backend servers to view the application in action. The series aims to transform the app into a functional Todo manager by expanding the `TodoService` for adding, updating, and deleting Todos in the upcoming final installment.