When Eva and her family go to Seacove for a holiday, she's looking forward to seeing her friend Kate again, but things go very wrong.

Kate's granny's in hospital and with no one to look after her, Kate's hiding out at home by herself, afraid she's going to be taken into care. But how long can she manage by herself, and should Eva help her?

It's not just Seacove that Eva's visiting - her friend Ruby offers her the chance of a visit to London. And there may be a way the trip with Ruby can help Eva sort things out for everyone …

It seems impossible, but if you have a problem that needs solving, just leave it to Eva!