The otterly bonkers Brown family are hugely excited, as today's the day
they move to their new home. But when they get there they find the
beastly Black family have got there first. This riverbank ain't big
enough for the both of them, so there's only one thing for it: war.
Well, not real war. Otters are more into playing than fighting, so
instead they decide to hold a giant sports day - and may the best otters
win.