Viva's Papi is a bus driver and Viva loves going to work with him. The sounds of the traffic and the voices of the passengers are music to Viva's ears. When she finds out that Papi's union is going on strike, she convinces Papi to take her along to the picket line. When quiet Papi is too nervous to give his speech, Viva uses her powerful voice to give him the confidence to find his own. From publisher's description.