▁Lisa ▁about ▁the ▁party , ▁but ▁she ▁free zes ▁them ▁and ▁h ides ▁them ▁in ▁a ▁cup board . ▁Lisa ▁real izes ▁that ▁the ▁boys ▁need ▁a ▁challenge ▁to ▁boost ▁their ▁confidence ▁and ▁has ▁a ▁gang ▁of ▁mut ant ▁b ik ers ▁in va de ▁the ▁party , ▁causing ▁cha os ▁and ▁sending ▁the ▁boys ▁running . ▁ ▁When ▁the ▁b ik ers ▁take ▁Deb ▁and ▁H illy ▁host age , ▁Wy att ▁and ▁Gary ▁decide ▁to ▁confront ▁the ▁b ik ers , ▁causing ▁Deb ▁and ▁H illy ▁to ▁fall ▁in ▁love ▁with ▁them . ▁The ▁b ik ers ▁leave , ▁and ▁the ▁next ▁morning , ▁Ch et ▁disco vers ▁the ▁house ▁in ▁dis array , ▁including ▁a ▁local ized ▁snow st orm ▁in ▁his ▁room , ▁and ▁the ▁miss ile . ▁Lisa ▁tells ▁the ▁boys ▁to ▁esc ort ▁the ▁girls ▁home ▁while ▁she ▁tal ks ▁to ▁Ch et ▁alone . ▁Gary ▁and ▁Wy att ▁proc laim ▁their ▁feelings , ▁and ▁both ▁girls ▁reci proc ate ▁their ▁feelings ▁to ▁the ▁boys . ▁Return ing ▁to ▁the ▁house , ▁the ▁boys ▁discover ▁Ch et , ▁now ▁transformed ▁into ▁a ▁talking ▁mut ant ▁blob . ▁He ▁apolog izes ▁to ▁Wy att ▁for ▁his ▁behavior . ▁Up st airs , ▁Lisa ▁ass ures ▁them ▁that ▁Ch et ▁will ▁soon ▁return ▁to ▁normal , ▁and , ▁real izing ▁that ▁her ▁purpose ▁is ▁complete , ▁h ugs ▁both ▁Gary ▁and ▁Wy att ▁before ▁de - material izing . ▁As ▁she ▁leaves , ▁the ▁house ▁is ▁mag ically ▁clean