After having a vision, Lock and Boone travel into the jungle to look for a way to open the hatch. Boone climbs into a beechcraft at the top of a cliff and is fatally injured as the plane hits the ground. Kate asks Jack to help Sawyer with his headaches. Flashbacks show Locke's meeting his estranged biological parents for the first time. This episode is another one that I love and it is another season one classic.
I was surprised to see Boone be hurt like that at the end of the episode and at the time this was shown he was my favourite character.