Dagur's little boat hit shores on a different beach on Dragon's Edge, absolutely not the north one, for he knew that the riders would've kept it well watched after the past events, and he surely wasn't taking the risk of failing his mission right away. Not when he would be given a Night Fury if he accomplished.
A little Night Terror shriek in alert and rose to its feet on the little watchtower when it saw the redheaded man lay foot on its island. It was about to fly away, but with the equipment given to him by Viggo, he managed to knocked out the little dragon with one arrow, fired from a Dragon Hunter bow.
Dagur laughed maliciously as he saw it fall to the ground and pulled out the arrow from its little body and continued on walking forward, straight in the forest, towards the Dragon Rider's base, closer this time.
But even though he shot down the main guard, other Night Terrors still saw the intruder, and flew directly towards their friends' base, before Dagur got there.
...
Hiccup was exhausted after Fishlegs came, and had to get some sleep to at least be able to last longer. While he rested upstairs, Astrid talked with the gang, each sharing what they thought and what they should do.
''You think what he had is deadly?' Snotlout asked, concerned about his cousin.
''All poisons can be deadly if you don't take care of it,'' Fishlegs informed.
''We have to find the cure before he gets any worse...'' Astrid said.
''Yeah but how are we gonna do that when we have absolutely no idea where to search?'' Tuffnut stated.
''You tell me. If Hiccup's telling the truth about Viggo being the one who poisoned him, then he must have some cure or antidote.'' Astrid continued. ''He won't risk having that thing around without having anything to heal it in case he's victim of it.''
''Or we can make the cure ourselves,'' Ruffnut said, the idea of making super risked potions rushing to her mind.
''But we don't have anything about how to make it. Let alone there's nothing about it in Fishlegs' books.'' she pointed out. ''Fastest way would be to get the cure from Viggo.''
''So this means we have to somehow find the cure to a deadly poison that is extremely painful, in a matter of hours, without getting it into our blood in the process?'' Snotlout said, ''Great idea, Astrid.''
''Look, Hiccup's injured, poison running through his veins, if you wanna stay here, that's fine, but I'm willing to get that cure, no matter how high the stakes are.'' Astrid spoke, clearly willing to do anything to save Hiccup's life.
''Alright, alright, no need to get violent,'' he said, begging to calm down by gestures with his hands.
''But, Astrid, going out there would be foolish with a missing rider.'' Fishlegs informed, ''Chances of making it all out are pretty slim...''
But before Astrid could say another word, a little Night Terror flew in, landing on Fishlegs shoulder, shrieking loudly in alert.
''Night Terror report.'' Fishlegs spoke, taking the little dark dragon in his hands. ''Someone's here.''
Astrid's eyes grew wide and rushed upstairs to let Hiccup know, forgetting he was still resting and trying to sleep. The gang downstairs walked out to prepare themselves and their dragons, leaving Astrid and Hiccup alone in the hut.
''Hiccup, bad news.'' she said.
''What? Worse than what's happening to me?'' he replied, eyes closed, lying on his wooden bed, his blanket over him to keep him warm.
''I don't know, you tell me.'' she continued, ''Intruder on the island, we need to prepare ourselves. What should we do?''
''Whoever is here is probably after the Dragon Eye...'' he breathed out heavily. ''It's under my bed, grab it and make sure they don't get it...''Astrid kneeled down and reached out a hand under his bed, grabbed his satchel in which he kept the Dragon Eye in, for leaving it on his desk like he usually did before wasn't cautious anymore. ''I'm relying on you...''
''What about you?''
''I'll be fine... Take Toothless, he can help you defend the base...'' he breathed out, clearly exhausted. ''You'll need all the help you can get...''
''But if they come, there'll be no one to look after you while whoever out there strikes,''
''Viggo knows I'm injured... Nobody will come after me... All they want is the Dragon Eye. You can't let his men have it, you have no idea what he's planning...''
She hesitated for a moment, not wanting to accept leaving him here alone without anybody to defend him if anything happened. ''I promise... We'll do whatever needs to be done.'' And she went off to join the other riders at the Club House to prepare themselves for the attack. Since they didn't see any ships or soldiers themselves, they didn't know how many men there would be, and that was the thing. They didn't know what to expect.
She walked in the building, the other riders waiting there for her orders since Hiccup was ill and couldn't do that about now.
''I got the Dragon Eye,'' she let them know as she placed the bag in which it was on the table.
''Alright... What now?'' Tuffnut asked, speaking everybody's mind.
''Who do you think Viggo sent after us?'' Snotlout questioned, ''Ryker or simple soldiers?''
''Funny you should asked, Snotlout... If there's one thing I know, it's that whoever's wandering out there in our woods, is determined to get the Dragon Eye.''
''How do you know that?'' Ruffnut wondered.
''Haven't they seen all our defences? They know we're ready,'' she said, ''If they wanna come get what's in our hands-.''
''But we're not gonna let them get the Dragon Eye.'' Snotlout said, ''Right?''
''Of course not. We won't let that happen.'' she said.
...
Dagur was making his way in the woods quickly, very close to the riders' base now. All he'd have to do is wait until night and then he would strike, and his mission would be complete. He would grab the Dragon Eye and get away, piece of cake. But if there was something about Dagur, was that he never learned from his mistakes.