'Would you please just slow down for a minute and think!' Hermes said exasperatedly. He did all he could to catch Penny's attention. All she obviously could think of was getting ready as fast as possible to save Nathan from the underworld and especially from Persephone's claws. But she clearly hadn't thought it through. She was running back and forth with a backpack in her hand and stuffing it with all kinds of 'helpful' things which would do her no good at all once she'd reached the underworld. How on earth was she going to accomplish this impossible rescue mission if she didn't even have the slightest idea of what she was getting herself into? If only she would listen to him.

'Do you even know where you're going?'

This made Penny stop for a moment. She looked at him quizzically. 'Of course I know where I'm going. I'm going to the underworld, to save Nathan.'

'Yes, of course you are, but do you know where the underworld is, or how to get there?'

'I… No, I don't. But I've got you, so you can take me there, right?'

'Not quite. I can show you the entrance alright, but you'll have to find a way in all by yourself.'

'If you take me to the entrance, then it can't be too hard. I mean, if I'm already there, then it's quite straightforward how to get in, isn't it.'

'You're not thinking Penny. How do you get into the underworld? How do you actually enter?'

'I don't know… step through a gate or something, I guess.'

Hermes sighed. 'What are you even imagining that the underworld looks like? And I thought you were so familiar with my world! Ever heard of Charon?'

'Isn't he the ferryman who… Of course! How could I forget? To enter the underworld, you have to cross the river Styx, and in order to do so, you have to pay the ferryman.'

'So have you finally found the flaw in your rescue-plan?'

'Actually, no, I still don't see what the problem is. You said you could take me to the entrance, and once I'm there, I simply have to pay the ferryman, and he'll take me right into the underworld.'

'Oh, right. It's as simple as that. No, you're absolutely right, your plan is completely waterproof. What could possibly go wrong?' Hermes retorted sarcastically.

'Ok, ok, I get it, I'm forgetting something. You don't have to be so nasty about it. Please, tell me, oh great and wise god, what has escaped my mind? What I should do?' Now it was Penny's turn to be cynical and mock Hermes. He decided to be the better man however and ignored her sarcasm entirely.

'What are you going to pay the ferryman with?' was all he responded.

'With money of course,' Penny answered surprised. She hadn't expected that question.

'And with what kind of money? Which currency are you going to use?'

'I don't know. You tell me.' She'd thought the ferryman'd take anything: euros, pounds, dollars… Did she really have to go and change money before she could leave? But it was the middle of the night. She'd have to wait till the next morning! For all she knew Nathan didn't even have that long! She'd told Hermes that he would know that he shouldn't eat, but did he really? What if he didn't know where he was? After all, she hadn't believed Hermes straight away either. What if he didn't know, or didn't want to believe it, and ate something anyway? No, she had to get there as quickly as possible, before it was too late.

She looked Hermes straight in the eyes. She had no time to loose. 'Tell me. Which kind of money do I need?' she said resolute.

'You'll need drachmae of course. Ancient Greek coins. Two to be exact.'

Penny looked at him, dumbfounded. 'And where am I supposed to get those? In case you hadn't noticed, people don't really use them anymore.' Then she thought of something: 'Can't you lend me some? I'm sure you can spare a coin or two.'

'Actually, I can't. I don't have any drachmae anymore. I don't need them to get into the underworld, you see, I have my own means of transportation.' He looked at his sandals, the wings beating silently. 'No, I'm afraid you'll have to find them somewhere yourself.'

Penny tossed her backpack on the floor angrily. Where on earth was she going to find a coin that hadn't been used for centuries! The only place she had ever seen them was…

'Oh my god, no! I think I know where I can find them, but I can't just barge in there and take them. That's impossible! I'd… I'd really have to steal it! But I can't break into that place. I can't! It's impossible!'

'What place are you thinking of?' Hermes wanted to know.

Penny didn't meet his look. She was horrified at the prospect of what she might have to do. She merely stared aimlessly, with a blank expression.

'Penny, what is it? What place are you thinking of? Where can you find those coins?'

'At the British Museum.'