Will revisits Sam's journal entry about the day Bill died. Sam, Hannah, and Paul remember their friend.

Sam writes a song about Thomas Mann's The Magic Mountain, the book that Bill was reading on the trip.

Sam, Bill, Hannah, and Paul give a motivational speech to a group of students on their way across the Navajo Reservation. Sam, Paul, and Hannah also recount some of their more memorable hosts from the trip, and Bill has a terrifying encounter with a stranger at midnight.

Hannah and Paul recount a terrifying ordeal from the second day of their bike trip with Sam and Bill.

Will and Bob arrive safely in Wisconsin. Sam writes a song about a strained relationship between two brothers, and Sam shares his bike journal with Will.

Two years after Bill's death, Will and Bob embark on an 1,100-mile bike tour from Massachusetts to Wisconsin.

Will tries to honor his brother with a toast at Sam's wedding, where Sam marries an identical twin. Will remembers being mistaken for his twin brother by a grieving mother.

My twin brother launches a prolific songwriting career after experiencing a devastating loss on a cross-country bike trip.