Mighty Meg and the Super Disguise (Mighty Meg, Bk. 4)

After almost having her superpowers discovered while rescuing a toddler from a sinkhole, Meg decides that she needs a disguise so she can help people while protecting her identity. But when more sinkholes start appearing out of nowhere, Meg may  have to put aside her costume dilemma and risk being exposed in order to save the day!