Archer, Malcolm and T'Pol made their way down to engineering. As soon as they entered they saw Trip standing on the platform by the warp reactor controls with Crewman Darner.

"Trip?" Archer called. Upon hearing his name Trip turned round to face him.

"Hi John." Trip replied. The three officers look at each other in slight surprise by the way Trip was addressing the captain. He never called him 'John' before, so why was he starting now? Trip jumped down off the platform and moved over to his friends.

"Trip?" Archer said again.

"What?" Trip said realising their confused expressions. "Ah. You're wondering where I went after that Anomaly hit aren't ch'ya?" He said. "Well. I decided to go and get myself to sickbay. Although I was slightly surprised that Phlox was down there instead o' Travis." He leant up against the frame for the small lift.

"Why would Travis be down in sickbay?" Archer asked. Maybe Trip needed to go back there and have his head checked again. Scrunching his eyes up in surprised confusion Trip gave his answer as if he was talking to a young child.

"Because Travis is the chief medical officer. Have you forgotten that? And by the way where's Erin? I know she's meant to be here for duty." He looked around trying to look for someone. The three officers who had entered stared at Trip blankly.

"Erin who?" Archer knew that there was no one on the ship with the name Erin, at least not to his knowledge. Maybe Trip had found out that one of the officer's middle names was Erin. Trip faced them again, and again he gave his answer slowly as if he were talking to a child.

"Erin Tucker? My daughter. You've forgotten about her?" Malcolm and John looked at each other uncomfortably. Also Rostov and a couple of other engineers who could hear the conversation were looking at Trip. T'Pol had her eyebrow's raised in slight surprise by what Trip was saying.

"Trip. You don't have a daughter. I would know."

"Well sure I do. She was born 16 years ago, just after I married Hoshi. Don't you remember? You were there John. You were my best man. Also where's Hoshi?" Archer hadn't known Trip for that long. He'd only known him about 10 years.

"Hoshi's on the bridge."

"Givin' the orders as usual then." Trip laughed a bit but quickly stopped noticing his friends' reaction to what he was saying. John didn't say anything. He now realised that everything Trip was saying to him proved T'Pol's theory about the Parallel Universe.

"Trip, Hoshi's just an Ensign. She doesn't give orders to anyone." John explained as calmly as he could. "I'm the one that gives the orders around here." Trip just stood with his mouth wide open. He didn't know what to say. He turned round and looked the warp reactor.

"This is a dream then?" he turned back round to face them.

"Actually Commander we believe that you are in a Parallel universe and have switched places with our Commander Tucker. It happened when the Anomaly hit the Commander along a corridor." T'Pol began to explain.

"Where I guess you were replacing a damaged relay on C deck."

"Yeah I was doing that with you." Trip said pointing his left finger at Archer. "A Parallel Universe?" T'Pol nodded once." So how do I get home then?"

"We don't know." T'Pol replied. Trip sighed heavily and put his hands on his waist and looked around engineering at everything.

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Trip was walking around the ship, noticing tiny little differences from what he knew in reality from this dream. But he entered this dream a few hours ago and it seemed to be going on a long time. He was now beginning to wonder whether he was in a coma – that would certainly explain for having a long dream. But everything he was doing felt so real. There was also another thing that was putting doubt in his mind about the whole situation being a dream…. If it was a dream surely he would know everything going on, he would know how to react as it was all in the sub-conscious mind, you don't control dreams, they control you, but Trip was actually making decisions…. Also the fact that Hoshi was surprised that Trip wouldn't kiss her at all surprised her.

Up on the bridge a meeting had been called for the senior officers, although this meeting didn't include Trip. The seven of them were standing around the table in the situation area just behind the bridge.

"Has any one else noticed something strange about Commander Tucker?" Hoshi asked turning to her officers.

"When he came into sickbay earlier he was rather surprised to see me. Now he's been in sickbay loads of times. he was wondering why Phlox wasn't down there." Travis replied.

"Me? But I'm an exo-biologist. Why would I be down in sickbay?" Phlox said.

"T'Pol? What's your analysis of Commander Tucker?"

"I do not think he is himself, but as Doctor Mayweather has pointed out he is Commander Tucker and in perfect health. However I do have a theory which could explain his oddness."

"Well I'd sure as hell like to hear it." Erin said from her spot at the end of the table. "Cause I've certainly never seen my dad act like that before." T'Pol turned to face the Captain.

"I believe that when the anomaly hit the ship and Commander Tucker I believe he was transported to a parallel universe, and has been replaced by another Commander Tucker."

"You're telling me that Vulcan's don't believe in time travel but you do believe in parallel universes?" Reed cried from his position next to Phlox.

"That is correct ensign." She said as she looked at Ensign Malcolm Reed who was shaking his head in disbelief. T'Pol had her hands neatly tucked behind her back. Malcolm, as usual, had both his hands placed on the display table and was leaning on it, his head slightly bent forward and looking down at the floor. Travis had the same posture that T'Pol had taken up and Phlox was standing with his arms crossed in front of his chest, intently listening to the babble of the humans and the Vulcan officers.

"I'm sorry Lieutenant, but we've proved that time travel is possible!" Malcolm declared hoping to win his little battle against T'Pol. He put a little emphasis on her rank as he spoke because he liked to torment her by doing that, and it usually worked. However today T'Pol made now physical response to the rank emphasis. It was a normal thing for the crew to experience in a week. There normal was an argument between these two and surprisingly the outcome of who won was 50/50. They were nearly even in their arguments.

"Since arriving on this ship and having experienced time travel and now know that is it possible it's just the rest of the Vulcan population don't believe in it." Malcolm sighed. Alas he had lost and had no response to T'Pol's statement. He really did sometimes get annoyed by T'Pol and her silly Vulcan beliefs.

"All right. So. Trip is in a parallel universe and we've got another person. What do we do about it?" Hoshi looked at everyone, her eyes finally resting upon T'Pol as she spoke out.

"I believe that the anomaly that hit us is the doorway between the two worlds. If we went back across the anomaly I believe that he would be sent back."

"All right, listen. I was with Trip at the time it hit, why wasn't I transported?" Archer said as he stepped down the steps coming off the bridge and down into the situation area. "Sorry I'm late."

"That's all right Lieutenant." Archer went and stood next to Erin.

"Every universe has differences between them. No two are the same. However I believe that the universe that we exchanged crewmembers with, Commander Tucker is the same position, rank and field of work as ours. Where as all of us here are different."

"That sounds like crazy talk to me." Erin said straitening up and running her hand through her hair. "Wouldn't the other ship need to go across the anomaly at the same time for both of them to be returned to their rightful places?" Everyone exchanged glances after hearing what the young girl had come up with.

"She's got a point." The British helmsman said as he stood up straight and crossed his arms in front of his chest. Everyone remained silent while they tried to think of a solution to their dilemma. Unbeknown to them Trip was on the bridge, just out of sight from everyone.

"I Believe Commander Tucker should be informed about the situation. No doubt he has noticed several differences himself."

"You can say that again T'Pol." Everyone turned to see Trip standing just behind Erin and Archer the other said of the rail. He was leaning against it.

"How long have you been there?" Trip kept his eyes fixed on Hoshi as he began to speak.

"Long enough. So let me guess this straight. You Hoshi are the Captain around here, plus also I'm married to you and Erin's our daughter. Lieutenant T'Pol you're…." He moved his hand in a slight odd movement as he took a wild stab at T'Pol's position "Chief of security?" T'Pol nodded her head slightly when Trip was able to guess correctly what her job was on the ship. "Ensign Malcolm Reed you're the helmsman. Travis is doctor, Crewman Phlox is an exo-biologist. Lieutenant John Archer is COMM officer?"

"I guess I'm not in your world then." Trip shook his head.

"Where I'm from you're the captain." John face was a picture of happy shock. He always wanted to be a captain, and here was someone telling him he was a captain in an alternate reality. Tri continued with the rank and job guessing. "Crewman Erin Tucker here has got two jobs, Engineering and also Science officer."

"How long has it taken you to work all that out?" Malcolm asked as he moved up to stand next to his friend.

"Well the stripes on your uniforms and the little rank pins say most of it. The fact that Erin has one red and one green helped me to figure out that. But I think I know a way to get me back home." Everyone just starred at Trip waiting for him to give his explanation of how he would be able to get himself home. Both the ships were needed to cross the anomaly at the same time in order for the switch to happen and for them to be returned to their proper places. It wasn't going to be an easy task, but they had to try whatever they could come up with. They were only going to have to hope that the other ship had also realised what was going on and were going to try and do something.