George Washington makes and announces his plan to cross the river. His plan is to cross the Delaware River on Christmas night, when everyone's out partying and having fun and then do a surprise attack on the Hessians. Not everyone agreed with Washington but he had the final say as leader.
As they were crossing the river, it was very cold and snowy. Many soldiers became ill or had frostbite. This journey took longer than expected.
Since the trip took so long they wouldn't have been able to do the surprise attack on the Hessians while it was still dark.
Once they arrived, they saw a shed with four Hessian guards inside. They killed the guards so that they wouldn't be able to warn the other people at Trenton and ruin the surprise attack.
Despite the light, they were still going to do the surprise attack. The Hessians were completely out of the blue. They wanted to have more of a european war style but that's not how it happened. The Hessians ended up surrendering after many men died.
Washington and his soldiers were very relieved after the Hessians surrendered. Even though they were tired, they still had to march back to the river so they could cross the river before it freezes over. The Continental Army had won this attack.