A boy and his dad board the train. Dad is stuck into his phone and misses the fact that a tiger boards the train too...and so does a family of hippos, and a band of crocs, and a mum with her piglets, and a pug in a boa - or two...On the way to the seaside pandemonium ensues, and then the tiger roars... Has he finally had enough? And what will dad say? Will he even notice?