Harvey's father was a famous rock climber who died when Harvey was just a baby. When a Park event leaves Harvey feeling the loss of his father very strongly, he sneaks away from the Valley to make the dangerous climb to a remote lake that was his father's favorite spot in the world. Guessing where he's gone, Zoe, Lassie and Harvey's mother, Beth, hike after Harvey, hoping to catch him before he gets into real danger. In the end, Harvey's own gifts and Lassie help the boy reach the remote lake and share a moment with his father.