King Menelaus returned back to his castle to see that Helen was gone and called all the other ships of Greece to go to Troy and get Helen.
Thetis dipped her son Achilles, into the River Styx to make him immortal but she held on so tightly around his ankle that every part of his body was immortal except for his ankle. The Greeks found Achilles and enchanted a sword so when he picked it up he would want to fight.
The Greeks finally arrived on the Trojan shore and Prince Protesilaus was the first to arrive on shore and got an arrow to the throat.
Fast Forward 9 years. During this time the Greeks and Trojans had minor battles with no major casualties and the Greeks built a seaside village and raided Trojan towns.
During a raid, the Greeks captured a girl named Brieses that Achilles wanted, but she was given to Agamemnon but Achilles wanted her too.
Achilles was very upset about this because he wanted to love Brieses so he fought for her. Achilles lost so he pouted for 12 days and refused to fight for Greece.