The train ride back to London was filled with excitement ... and hunger. As Jina did not have a good breakfast, she was looking forward to getting some snacks from the food trolley. Around noon, when she heard the trolley lady, she jumped out of her compartment quickly, but a long queue had already formed in the corridor. Clearly she was not the only hungry student on this train. She stood on tiptoe to see how long it would take for her turn to come. What would she buy? Would there be any chocolate frogs left for her?