was there anything particular about its ending?
It has two endings - in the director's cut ending, Neville heads to Vermont along with Anna and Ethan.
I Am Legend (film)
The next morning, Neville abandons his research and heads along with Anna and Ethan to Vermont, a changed man, in the hope of finding the survivors’ colony. They drive down across a bridge while Anna delivers a hopeful monologue ending with the statement: "You are not alone.”
who played will smith's daughter in i am legend Willow Smith what was the film about? It is about how a virus that was originally created to cure cancer, wiped out most of mankind,  leaving Neville as the last human in New York, other than nocturnal mutants. Neville is immune, and works to develop a cure while defending himself against the hostile mutants.
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I Am Legend (film) [SEP] Director's Cut ending
The next morning, Neville abandons his research and heads along with Anna and Ethan to Vermont, a changed man, in the hope of finding the survivors' colony. They drive down across a bridge while Anna delivers a hopeful monologue ending with the statement: "You are not alone.”