Mel's new relationship with Cutler is causing a rift with Sandy, who recruits Rebecca to babysit against Mel's wishes. Zoe has agreed to a bone marrow transplant to save her estranged mother, but Griffin is acting strangely and can't seem to pull it together to support her. Mel, riding a high from her relationship with Cutler, takes an uncharacteristic risk in surgery. The whole Conner family is rocked when Rebecca's first time looking after Maya results in crisis.