1. Beowulf sets out on his journey for Daneland
When Hrothgar asks Beowulf to come to his country to help him, Beowulf doesn't hesitate. Beowulf's father was close friends with Hrothgar, so he felt like he owed the king something, and he couldn't say no to his pleas for help. That's why he gathered his men and went to Daneland.
2. Hrothgar welcomes Beowulf
Once Beowulf arrives in Daneland, he is greeted by Hrothgar and his family and men. There is a huge feast to celebrate the arrival of a famous hero because now everyone can somehow relax now they know they will be safe soon, from the monster Grendel.
3. Beowulf waits for Grendel to attack Heorot
Beowulf and his men pretend to be asleep in Heorot (Hrothgar's castle) and wait for Grendel to arrive. Once he does, Beowulf and his men attack the monster, and manage to hurt him. Beowulf rips out one of his arms before he manages to escape to his den.
4. Beowulf succeeds in defeating Grendel by decapitating him
However, Grendel doesn't get far - he is bleeding profusely from his wound, and he crashes in the forest. Beowulf manages to catch up with him, and decides to kill the monster by ripping his head off with his bare hands. Thus, the threat is eliminated.
5. Beowulf fights with Grendel's mother
Even though he thought there is no threat anymore, it turns out he was wrong. Grendel's mother was also alive and she was angry because her son was dead. Therefore, Beowulf has to fight with her as well, before she can manage to hurt Hrothgar and his people.
6. Beowulf sets out for his Geatish homeland
Once he's killed both Grendel and his mother, he can safely return to his home country where he will be celebrated as an even more famous hero. However, when Hrothgar dies, he goes back to Daneland to become king there, instead of his own country.
7. Beowulf sets out for his fight with the dragon
This is Beowulf's final battle - he has to defeat the dragon that is threatening his kingdom. Beowulf is very old now, but he still wants to protect his people. He manages to wound the dragon, but the dragon manages to kill him. One of his men, Wiglaf, is tasked with defeating the dragon afterwards.