Rookie runner

When Alvin's twin sister, Yasmin, lands the lead role in their middle school play, Alvin is faced with the need to find something to do after school while she is rehearsing, so he takes up cross-country running (it is either that or doing homework in the library)--he has always been a fast runner, but he soon learns that distance running is more about patience and pacing than pure speed and staying in the lead, and he will have to adapt or be left behind.